Journal of Fish Health
type: channel
description: The Journal of Fish Health (JFH) has an objective to publish and provide high-quality scientific contributions to the field of fish health. These contributions are sourced from innovative research that encourages science and technology development in the field of fish health on a national and international scale. This journal serves as a communication medium for researchers, academics, students, and communities. This journal is published four times a year in February, May, August, and November since 2024.
publisher: Aquaculture Department, University of Mataram
language: en
publication name: Journal of Fish Health
issn: 2798-2955
copyright: 1. The copyright of this journal belongs to the Editorial Board, based on the author's consent, while the moral rights of the publication belong to the author(s). 2. The formal legal aspect of journal accessibility refers to the same Creative Common Attribution + Noncommercial + ShareAlike (CC BY-NC-SA), implying that publication can be used for non-commercial purposes in its original form. 3. Every publication (printed/electronic) is open access for educational, research and library purposes. In addition to the objectives stated above, the editorial board is not responsible for copyright infringement
items: Culture of Chaetoceros calcitrans as Natural Feed for Mytilopsis adamsi Cultivation at National Research and Innovation Agency, North Lombok
items: The Effect of Crude Jackfruit (Artocarpus heterophyllus) Leaf Extract on Pseudomonas fluorescens Bacteria In Vitro
items: Application of Black Turmeric Rhizome (Curcuma aeruginosa Roxb) Ethanol Extract to Treat Aeromonas hydrophila Infection in Catfish (Clarias gariepinus)
items: Species Composition and Catch Rate of Cast Net Fisheries in Kerinci Lake, Jambi
items: Ammonia and Nitrite Control Techniques in Vannamei Shrimp Cultivation Media at PT. Panen Berkat Sejahtera Bersama (PBSB) Sambelia, East Lombok
items: Characteristics of Mudgrovel Crabs Caught Using Trap Fishing Gear in Lambur Luar Village, Muara Sabak Timur District
items: Evaluation of Alginate Use as an Immunostimulant in Litopenaeus vannamei Shrimp Aquaculture (Review)
items: Hematological Parameters and Growth Performance of Nile Tilapia (Oreochromis niloticus) Fed Fermented Papaya (Carica papaya L.) Leaf Extract
items: Potential Implementation of Payment for Ecosystem Services (PES) for Mangrove Rehabilitation in Poka Village, Ambon City
items: Climate-Resilient Biofloc Aquaculture: Energy Efficiency, System Robustness, and Operational Adaptations under Changing Environmental Conditions (2020–2025)
items: The Effect of Silkworm (Tubifex sp.) Growth on Rice Field Mud, Chicken Manure, and Tofu Pulp Media with Different Compositions
items: Analysis of Bottom Gillnet Catches in Lambur Luar Village, Muara Sabak Timur District, Tanjung Jabung Timur Regency
items: Cover, Editorial Boards, Table of Contents
items: Bioremediation in Aquatic Systems: A Literature Review on Fish as Natural Agents for Water Quality Management in Aquaculture
items: Growth of African Catfish (Clarias gariepinus) Cultured Using the Biofloc System at Different Stocking Densities
items: Survival Rate of Barramundi (Lates calcarifer) Larvae Maintenance at Balai Besar Riset Budidaya Laut dan Penyuluhan Perikanan (BBRBLPP) Gondol
items: Development Strategy to Increase Sales of Frozen Fish Products Produced by CV. Novira Abadi
items: Analysis of Perception and Compliance of Sibolga Purse Seine Fishermen Based on Licensed Fishing Ground
items: Effectiveness Test of Aquaculture Systems: Green Water, Biofloc, and Aquaponic Systems on the Stress Response of Snakehead Fish (Channa striata)
items: Growth and Hematological Response of Common Carp (Cyprinus carpio) to Dietary Supplementation with Water Hyacinth (Eichhornia crassipes) Extract
items: Immunostimulation of Nile Tilapia Through the Provision of Synbiotic Feed (Eleutherine bulbosa and Probiotic) to Prevent Motile Aeromonas Septicemia (MAS) Disease
items: The Effect of Egg White Powder Concentration on The Quality of Meatballs Based on Surimi from Tilapia, Catfish and Pangasius
items: The Effect of Different Salinity on Moulting of Mud Crab (Scylla serrata) in Controlled Media
items: Differences in Eel (Monopeterus albus) Catch Results Using Fishing Gear Traps with Different Baits in Lopak Alai Village, Kumpeh Ulu District
items: Optimization of Hatchery Techniques to Enhance Larval Survival and Business Feasibility of Guppy (Poecilia reticulata)
items: Oyster Farming Management
items: The Strategic Role of Biotechnology in Aquaculture: Integrating Upstream and Downstream Processes for Sustainable Fish Production
items: Biochemical Profile of Macroalgae: Analysis of Primary Metabolites and Hydrocolloid Content in Oenaek Waters During the Dry Season
items: Construction Suitability of Trammel Net Operated by Kotabaru Fisherman Based on SNI 01-7237-2006

Culture of Chaetoceros calcitrans as Natural Feed for Mytilopsis adamsi Cultivation at National Research and Innovation Agency, North Lombok
type: item
description: This study was conducted to explore the culture technique of Chaetoceros calcitrans as a natural feed and its role in supporting the maintenance of the brown mussel (Mytilopsis adamsi). The microalga was chosen because it provides essential nutrients such as proteins, lipids, and carbohydrates that are important for the growth of aquatic organisms. The work took place over one month, from May 6 to June 4, 2025, at the National Research and Innovation Agency (BRIN), North Lombok. The culture followed a stepwise approach, starting with sterilization of equipment and media, the addition of KW21 fertilizer and silicate, inoculation with five-day-old seed cultures, daily maintenance, and cell density monitoring. The observations showed that C. calcitrans density rose steadily from the first day and peaked on day 5 at 4,020,000 cells/ml, before declining by day 7. This trend reflects the typical growth phases of microalgae, from lag and exponential to stationary and death phases. Feeding trials involved offering C. calcitrans to brown mussels twice daily at a dose of 500 ml each time. The results indicated consistent weight gain across all replicates, although growth levels varied among treatments. Overall, the study confirms that stepwise culture with appropriate nutrient supply and water quality management can produce C. calcitrans at optimal densities. Its application as a natural feed also provides measurable benefits for the growth of brown mussels in culture systems.
subject: Articles
  topic: section
subject: Chaetoceros calcitrans
  topic: keywords
subject: Mytilopsis adamsi
  topic: keywords
subject: Culture
  topic: keywords
subject: Natural Feed
  topic: keywords
creator: Muhamad Ridho Ilham At'tamimi
creator: Damai Diniariwisan
rights: Copyright (c) 2025 Journal of Fish Health
date: 2025-11-30
publication date: 2025-11-30
starting page: 601
ending page: 608
doi: 10.29303/jfh.v5i4.8866

The Effect of Crude Jackfruit (Artocarpus heterophyllus) Leaf Extract on Pseudomonas fluorescens Bacteria In Vitro
type: item
description: Cultivation activities often experience obstacles due to bacterial disease attacks, one of which is caused by P. fluorescens bacteria. Commercial treatment efforts include the use of antibiotics, but this can cause bacterial resistance. Therefore, an alternative treatment that is more environmentally friendly but can still be used as medicine is needed, namely the use of natural ingredients such as jackfruit (A. heterophyllus) leaves. This study aims to determine the effect of crude jackfruit (A. heterophyllus) leaf extract on P. fluorescens bacteria in vitro. This study used an experimental method with a Completely Randomized Design (CRD) consisting of 5 treatments, 2 controls, and 3 replications. The control treatment consisted of a positive control (Tetracycline 30 ppm), and a negative control (only using disc paper), as well as 5 different extract dose treatments, namely treatment A (60 ppm), treatment B (120 ppm), treatment C (180 ppm), treatment D (240 ppm) and treatment E (300 ppm). The results of the study showed that the use of crude jackfruit (A. heterophyllus) leaf extract affected P. fluorescens bacteria. The relationship between the use of crude jackfruit (A. heterophyllus) leaf extract with different doses and the resulting inhibition zone showed a quadratic regression pattern with the equation y = -0.0001x2 + 0.05x + 6.327.
subject: Articles
  topic: section
subject: Jackfruit (Artocarpus heterophyllus) Leaf
  topic: keywords
subject: Pseudomonas fluorescens
  topic: keywords
subject: In Vitro
  topic: keywords
creator: Tania Nilakandhi
creator: Anggita Noer Laily
creator: Desy Amalia Hidayati
creator: I Kadek Sumiana
creator: Farid Mukhtar Riyadi
creator: Arini Resti Fauzi
rights: Copyright (c) 2025 Journal of Fish Health
date: 2025-11-28
publication date: 2025-11-28
starting page: 572
ending page: 580
doi: 10.29303/jfh.v5i4.8673

Application of Black Turmeric Rhizome (Curcuma aeruginosa Roxb) Ethanol Extract to Treat Aeromonas hydrophila Infection in Catfish (Clarias gariepinus)
type: item
description: Aeromonas hydrophila is a pathogenic bacterium that frequently attacks, causes death, and harms catfish farmers. The continuous use of antibiotics for disease control has been shown to have negative impacts on pathogenic bacterial resistance, antibiotic residues in fish, aquatic environmental pollution, food safety, and causes allergies in human consumers. The use of phytopharmaceuticals is known to be more environmentally friendly and sustainable because they contain active compounds that are more easily degraded, thus leaving no synthetic antibiotic residues in fish tissues and water. This research aimed to determine the effect of black turmeric (Curcuma aeruginosa Roxb) rhizome ethanol extract on treating A. hydrophila infection in catfish. Fish were raised for 14 days. For the first seven days, they were kept under normal conditions. On day 7, the fish were infected with A. hydrophila. On day 8, the diseased fish were immersed in black turmeric rhizome ethanol extract. The experiment used group randomized design with treatment of control or without black turmeric extract (BT0), 35 mg/L, 40 mg/L and 45 mg/L black turmeric extract (BT35, BT40, and BT45). The result showed that treatments were not significantly different (P>0,05) on recovery rate, survival rate, and WBC, but significantly different in hematocrit percentage (P<0,05). The highest of fish recovery rate and survival rate (100%) were obtained in BT40. This research concluded that immersion dosage of 40 mg/L black turmeric rhizome ethanol extract could treating catfish infected with A. hydrophila.
subject: Articles
  topic: section
subject: Catfish
  topic: keywords
subject: Curcuma aeruginosa
  topic: keywords
subject: Ethanol Extract
  topic: keywords
subject: Aeromonas hydrophila
  topic: keywords
creator: Riri Mulfiani
creator: Indriyani Nur
creator: La Ode Baytul Abidin
rights: Copyright (c) 2025 Journal of Fish Health
date: 2025-11-27
publication date: 2025-11-27
starting page: 562
ending page: 571
doi: 10.29303/jfh.v5i4.8609

Species Composition and Catch Rate of Cast Net Fisheries in Kerinci Lake, Jambi
type: item
description: Capture fisheries in inland waters play a vital role in supporting food security and the economy of the community, including fishermen in Lake Kerinci who utilize cast nets as an economical and effective fishing gear. However, scientific information on catch composition, catch rates, and technical factors influencing the productivity of this gear is still limited. The purpose of this study was to analyze catch composition, catch rates, and factors influencing catch yields from cast nets in Lake Kerinci, Kerinci Regency, Jambi. The study was conducted from June 29 – August 7, 2025, using a survey method through participatory observation and interviews with 17 fishermen using cast nets, with a total of 34 data collection trips. Data collected included fish species, weight and number of catches, fishing duration, number of casts, and gear dimensions, then analyzed descriptively and using multiple linear regression. The results showed that the catch composition consisted of 162 tilapia (84.49% of the total weight) and 39 Nile tilapia (15.51%). The average catch rate of the throw nets reached 1.74 kg/hour, with the highest value for tilapia at 2.94 kg/hour. Regression analysis results showed that fishing duration, number of throws, and gear dimensions had no significant effect on catch results (p>0.05). It can be concluded that the throw nets in Lake Kerinci predominantly catch tilapia, while technical factors of the gear are not the main determinants of catch results. Environmental conditions and fish stock availability are suspected to have a greater influence on catch results.
subject: Articles
  topic: section
subject: Throw Net
  topic: keywords
subject: Catch Rate
  topic: keywords
subject: Catch Composition
  topic: keywords
subject: Kerinci Lake
  topic: keywords
creator: Destha Dwi Ananda
creator: Fatati
creator: Rizky Janatul Magwa
creator: Yurleni
creator: Lauura Hermala Yunita
creator: Putinur
rights: Copyright (c) 2025 Journal of Fish Health
date: 2025-11-25
publication date: 2025-11-25
starting page: 551
ending page: 561
doi: 10.29303/jfh.v5i4.8581

Ammonia and Nitrite Control Techniques in Vannamei Shrimp Cultivation Media at PT. Panen Berkat Sejahtera Bersama (PBSB) Sambelia, East Lombok
type: item
description: Intensive cultivation of vannamei shrimp (Litopenaeus vannamei) requires good water quality management to support the growth, health, and survival of the shrimp. This research was conducted at PT. Panen Berkat Sejahtera Bersama (PBSB), East Lombok, for 25 days (April 9–May 3, 2025) with the aim of determining the control techniques for ammonia (NH₃) and nitrite (NO₂) in the cultivation media. The method used was descriptive with primary data collection through observation, active participation, interviews, and field documentation, as well as secondary data from company archives and related literature. The water quality management techniques applied included siphoning the pond bottom, waste disposal through a central drain system, and the use of Aquastar Pond probiotics. The water quality parameters observed included ammonia, nitrite, dissolved oxygen (DO), salinity, and pH. The results showed that ammonia levels were stable at 0.0000 mg/L and nitrite was in the range of 0.007–0.059 mg/L, remaining within safe limits for whiteleg shrimp. DO, salinity, and pH parameters were also within optimal ranges, supporting metabolism, osmoregulatory balance, and nitrifying microbial activity. The application of siphoning techniques, waste disposal, and probiotics has proven effective in maintaining stable water quality and creating optimal cultivation conditions for the growth and health of vannamei shrimp.
subject: Articles
  topic: section
subject: Ammonia
  topic: keywords
subject: Central Drain System
  topic: keywords
subject: Nitrit
  topic: keywords
subject: Siphoning
  topic: keywords
subject: Water Quality
  topic: keywords
creator: Rifky Setiawan
creator: Septiana Dwiyanti
rights: Copyright (c) 2025 Journal of Fish Health
date: 2025-11-29
publication date: 2025-11-29
starting page: 593
ending page: 600
doi: 10.29303/jfh.v5i4.8571

Characteristics of Mudgrovel Crabs Caught Using Trap Fishing Gear in Lambur Luar Village, Muara Sabak Timur District
type: item
description: Mangrove crabs are a type of crustacean that lives in mangrove and estuary ecosystems. one of the freshwater fishery products that have high economic value that are often caught in Lambur Luar Village using trap fishing gear. Purpose of this study was to describe the characteristics of mangrove crabs caught using traps in Lambur Luar Village, Jambi Province. This study was conducted from February 1-16, 2025. The research method used was a census, with data collection techniques using probability sampling. The data observed included the type of mangrove crab, weight, carapace length, carapace width, and sex. Differences in weight, length, and carapace width of mangrove crabs were analyzed using ANOVA followed by Duncan's test at a significance level of 5%. The results showed that there were three species of mangrove crabs caught, namely Scylla serrata, Scylla olivacea, and Scylla tranquebarica. After ANOVA test and Duncan's further test, it was found that the carapace length between Scylla serrata, Scylla olivacea, and Scylla tranquebarica was significantly different (p≤0.05). while the carapace width and weight were not significantly different (p>0.05). Variations sex ratio in the Scylla serrata species were (0.78:0.22) and Scylla tranquebarica (0.67:0.33), indicating that the male population was more dominant in these two species. While the Scylla olivacea species, the sex ratio was almost balanced, namely (0.51:0.49). The conclusion of this study is that the characteristics of mangrove crabs differ between males and females, and there are significant differences in carapace length between mangrove crab species found in Lambur Luar Village.
subject: Articles
  topic: section
subject: Mangrove Crab
  topic: keywords
subject: Scylla spp.
  topic: keywords
subject: Trap Fishing Gear
  topic: keywords
subject: Carapace Length
  topic: keywords
subject: Sex Ratio
  topic: keywords
creator: Dinda Destiani
creator: Depison
creator: Rizky Janatul Magwa
creator: Lisna
creator: Fauzan Ramadan
creator: Yusyam Leni
rights: Copyright (c) 2025 Journal of Fish Health
date: 2025-11-25
publication date: 2025-11-25
starting page: 537
ending page: 550
doi: 10.29303/jfh.v5i4.8550

Evaluation of Alginate Use as an Immunostimulant in Litopenaeus vannamei Shrimp Aquaculture (Review)
type: item
description: The Pacific white shrimp (Litopenaeus vannamei) is one of the most important species in global aquaculture but remains highly vulnerable to bacterial, viral, and environmental stressors. Conventional reliance on antibiotics and chemicals has raised concerns over resistance and sustainability, underscoring the need for eco-friendly alternatives. Alginate, a natural polysaccharide extracted from brown seaweeds such as Sargassum, has emerged as a promising immunostimulant and functional feed additive. Experimental studies show that alginate supplementation enhances non-specific immune responses, including total haemocyte count, phenoloxidase, superoxide dismutase, phagocytic activity, and total plasma protein. At the molecular level, alginate upregulates immune-related genes (e.g., Toll, LGBP, proPO), resulting in higher resistance against Vibrio spp. and White Spot Syndrome Virus (WSSV). In addition, low molecular weight sodium alginate improves antioxidant activity and stress tolerance under cadmium exposure, while dietary supplementation supports growth performance and feed utilization. From a sustainability perspective, converting Sargassum biomass into alginate aligns with circular economy principles by transforming an abundant, underutilized seaweed into high-value aquafeed additives. This reduces dependency on antibiotics and synthetic chemicals while generating added value for coastal communities. Overall, alginate represents a multifunctional and cost-effective strategy to strengthen shrimp immunity, enhance resilience to pathogens and stressors, and promote environmentally responsible aquaculture production.
subject: Articles
  topic: section
subject: Alginate
  topic: keywords
subject: Aquaculture
  topic: keywords
subject: Evaluation
  topic: keywords
subject: Immunostimulant
  topic: keywords
subject: Litopenaues vannamei
  topic: keywords
creator: Nuri Muahiddah
creator: Irzal Effendi
creator: Eddy Supriyono
creator: Rangga Idris Affandi
rights: Copyright (c) 2025 Journal of Fish Health
date: 2025-11-11
publication date: 2025-11-11
starting page: 527
ending page: 536
doi: 10.29303/jfh.v5i4.8402

Hematological Parameters and Growth Performance of Nile Tilapia (Oreochromis niloticus) Fed Fermented Papaya (Carica papaya L.) Leaf Extract
type: item
description: Nile tilapia (Oreochromis niloticus) is one of the most important aquaculture species worldwide, but intensive farming has increased susceptibility to bacterial infections, particularly Aeromonas hydrophila, which threatens productivity and survival. This study evaluated fermented papaya (Carica papaya L.) leaf extract (FPLE) as a natural immunostimulant and sustainable alternative to antibiotics in Nile tilapia culture. A 45-day feeding trial was conducted using a completely randomized design with five treatments (0, 16, 18, and 20 mL FPLE/kg feed) and three replicates. Hematological, immunological, growth, and bacterial resistance parameters were analyzed. Results showed that supplementation with 20 mL/kg FPLE significantly increased post-infection leukocyte counts (2.82×10⁴ vs. 2.40×10⁴ cells/mm³), phagocytic activity (46.26% vs. 39.51%), and erythrocyte levels (5.85×10⁶ vs. 5.25×10⁶ cells/mm³). Differential leukocyte analysis revealed lymphocyte dominance (90.33%) and elevated monocytes (13.33%), indicating enhanced adaptive and nonspecific immunity. In addition, total bacterial load decreased by 22.4%, and specific growth rate improved (4.34% vs. 4.22%/day), while water quality remained within optimal ranges. The synergistic effects of papaya-derived bioactive compounds and Lactobacillus casei probiotics from Yakult likely contributed to immune enhancement and nutrient absorption. FPLE supplementation at 20 mL/kg optimized immunostimulation without compromising survival (77–84%), demonstrating its dual role in disease prevention and growth promotion. These findings highlight FPLE as a safe, eco-friendly feed additive with strong potential for reducing antibiotic dependence and supporting sustainable tilapia aquaculture.
subject: Articles
  topic: section
subject: Fermented Papaya Leaves
  topic: keywords
subject: Hematological Parameters
  topic: keywords
subject: Growth Performance
  topic: keywords
subject: Oreochromis niloticus
  topic: keywords
subject: Probiotic
  topic: keywords
creator: Widia Lestari
creator: Fariq Azhar
creator: Wastu Ayu Diamahesa
rights: Copyright (c) 2025 Journal of Fish Health
date: 2025-11-09
publication date: 2025-11-09
starting page: 512
ending page: 526
doi: 10.29303/jfh.v5i4.8335

Potential Implementation of Payment for Ecosystem Services (PES) for Mangrove Rehabilitation in Poka Village, Ambon City
type: item
description: Mangroves have an important role in supporting community welfare through various ecosystem services. However, in July 2022 there was mangrove damage in Poka Village, which was caused by exposure to waste from pipeline leaks during bridge construction. This incident damaged a mangrove area of 1,394 m2. The absence of market value for ecosystem services means that their benefits were often overlooked in economic decision-making. For this reason, incentive schemes such as Payment for Ecosystem Services (PES), where beneficiaries compensate providers, were considered necessary to reward the role of environmental service providers. The purpose of this study was to describe the potential implementation of PES for mangrove rehabilitation. The study observed the damaged mangrove areas and interviewed 61 respondents. For data analysis, the Contingent Valuation Method (CVM) was used to obtain the value of community’s willingness to pay (WTP) for mangrove rahabilitation. The results showed that the average value of willingness to pay was IDR 39,825.40 per household per month. As a concrete step, this value could be used as the initial amount of incentives in the Payment for Ecosystem Services (PES). Providers could be established or utilize existing institutional structures at the local level. Furthermore, the provider would make monthly or quarterly reports on the use of funds, the results of activities, and the condition of the mangrove ecosystem, which could be accessed by beneficiaries. Therefore, the implementation of Payment for Ecosystem Services (PES) in Poka Village had strong prospects to encourage the sustainability of mangrove ecosystem services.
subject: Articles
  topic: section
subject: Payment for Ecosystem Services
  topic: keywords
subject: Mangrove
  topic: keywords
subject: Rehabilitation
  topic: keywords
subject: Willingness to Pay
  topic: keywords
creator: Angela Ruban
creator: Eygner Gerald Talakua
creator: Julio Alexsandro Christo Talakua
rights: Copyright (c) 2025 Journal of Fish Health
date: 2025-11-29
publication date: 2025-11-29
starting page: 581
ending page: 592
doi: 10.29303/jfh.v5i4.8305

Climate-Resilient Biofloc Aquaculture: Energy Efficiency, System Robustness, and Operational Adaptations under Changing Environmental Conditions (2020–2025)
type: item
description: Climate change poses a significant threat to the sustainability of global aquaculture, including biofloc-based aquaculture systems (BFT). While BFT improves nutrient use efficiency and reduces water consumption, energy efficiency remains a key challenge, especially in terms of energy intensity and oxygen transfer (OTE/SOTE). This study conducts a systematic literature review (SLR) using the PRISMA 2020 method, focusing on energy efficiency in tilapia cultivation with BFT and adaptation strategies to climate variability. Key findings emphasize the importance of aeration, design optimization, and C/N management in minimizing energy consumption without compromising production. Additionally, integrating technologies like IoT/AI for adaptive DO control shows great potential in reducing energy intensity. This research contributes a systematic framework that links energy metrics with aeration design and operational adaptation strategies, offering guidance for developing more efficient and climate-resilient BFT systems. The study also recommends implementing renewable energy and smart water quality monitoring technologies to enhance aquaculture sustainability.
subject: Articles
  topic: section
subject: BFT
  topic: keywords
subject: Energy Efficiency
  topic: keywords
subject: OTE
  topic: keywords
subject: Climate Change
  topic: keywords
subject: Sustainability
  topic: keywords
creator: Bagus Dwi Hari Setyono
creator: Zaenal Abidin
creator: Rangga Idris Affandi
rights: Copyright (c) 2025 Journal of Fish Health
date: 2025-11-07
publication date: 2025-11-07
starting page: 489
ending page: 502
doi: 10.29303/jfh.v5i4.8259

The Effect of Silkworm (Tubifex sp.) Growth on Rice Field Mud, Chicken Manure, and Tofu Pulp Media with Different Compositions
type: item
description: The rapidly increasing demand for silkworms as natural feed has caused prices to rise, making silkworms a potentially valuable natural feed for farmed fish. To date, the supply of silkworms as natural feed still relies on nature, meaning that silkworms are not available throughout the year, but only during the rainy season. One way to support the availability of silkworms is through cultivation. The purpose of this study was to examine the effect of chicken manure, rice field mud, and tofu pulp on the growth of silkworms. The method used was a quantitative experiment with a completely randomized design (CRD) consisting of four treatments: P1 (100% mud), P2 (50% mud + 50% chicken manure), P3 (50% mud + 50% tofu pulp), and P4 (50% mud + 25% chicken manure + 25% tofu pulp). The results of the study showed that treatment P4 provided the highest absolute biomass growth with an average of 3.03 g. This indicates that the combination of chicken manure and tofu pulp provides an optimal synergistic effect for worm growth. From these results, it can be concluded that the combination of rice field mud, chicken manure, and tofu pulp (P4) is the most effective medium for silkworm growth.
subject: Articles
  topic: section
subject: Silkworms
  topic: keywords
subject: Rice Field Mud
  topic: keywords
subject: Chicken Manure
  topic: keywords
subject: Tofu Pulp
  topic: keywords
subject: Growth
  topic: keywords
creator: Mulyadi Safrika
creator: Reffi Aryzegovina
creator: Boni Ikhlas
creator: Lisa Mayasari
rights: Copyright (c) 2025 Journal of Fish Health
date: 2025-11-30
publication date: 2025-11-30
starting page: 466
ending page: 475
doi: 10.29303/jfh.v5i4.8149

Analysis of Bottom Gillnet Catches in Lambur Luar Village, Muara Sabak Timur District, Tanjung Jabung Timur Regency
type: item
description: The waters of Lambur Luar Village are a productive coastal area that supports capture fisheries activities, one of which is through the use of bottom gillnets. This fishing gear is considered fairly selective and environmentally friendly, making it important to assess its effectiveness in terms of catch composition. This study aims to analyze the main catch, bycatch, and discard from bottom gillnets operated by local fishers. The method used was a survey with purposive sampling on ten fishing units, with four replications per unit. The data were analyzed descriptively and supported by biodiversity indices, including diversity, evenness, and dominance. The results showed that mantis shrimp (Harpiosquilla raphidea) was the dominant main catch, with the highest number and biomass. Bycatch was dominated by demersal fish such as croaker (Johnius trachycephalus), tongue sole (Cynoglossus lingua), Chacunda gizzard shad (Anodontostoma chacunda), fourfinger threadfin (Eleutheronema tetradactylum), along with several other species. Meanwhile, discards consist of non-economic benthic organisms such as snails, starfish (Asteroidea spp.), horseshoe crabs (Tachypleus gigas), and ghost crabs (Ocypoda quadrata). The diversity index indicated a moderate category, reflecting ecosystem balance, while the dominance index was low, suggesting no single species excessively dominated the ecosystem. In conclusion, bottom gillnets with a mesh size of 3.5 inches proved effective in capturing target organisms suitable for consumption while reducing the proportion of unwanted discards. This indicates that bottom gillnets have the potential to support sustainable fisheries practices without causing significant negative impacts on the benthic ecosystem in the waters of Lambur Luar Village.
subject: Articles
  topic: section
subject: Bottom Gillnet
  topic: keywords
subject: Catch Composition
  topic: keywords
subject: Fish Catch
  topic: keywords
subject: Gillnet
  topic: keywords
creator: Ade Khairunissa
creator: Mairizal
creator: Rizky Janatul Magwa
creator: Lisna
creator: Fauzan Ramadan
creator: Wulandari
rights: Copyright (c) 2025 Journal of Fish Health
date: 2025-11-06
publication date: 2025-11-06
starting page: 476
ending page: 488
doi: 10.29303/jfh.v5i4.8108

Cover, Editorial Boards, Table of Contents
type: item
description: Cover, Editorial Boards, Table of Contents
subject: Articles
  topic: section
creator: Andre Rachmat
rights: Copyright (c) 2025 Journal of Fish Health
date: 2025-08-31
publication date: 2025-08-31
doi: 10.29303/jfh.v5i3.8071

Bioremediation in Aquatic Systems: A Literature Review on Fish as Natural Agents for Water Quality Management in Aquaculture
type: item
description: Aquatic animals play a significant role in bioremediation processes in aquatic environments through their natural activities, such as filtering particles, aerating water, and nutrient cycling. This study aims to review the use of aquatic animals as natural biofilters in aquaculture systems, highlighting their efficiency and the supporting role of microbial technology. The method used is a literature review from 24 relevant articles published between 2015 and 2024. Results show that species such as goldfish, catfish, and eels can reduce organic waste, regulate plankton composition, and enhance oxygen levels. Moreover, the integration of probiotics and biotechnologies such as microbial fuel cells, bioaugmentation, and biostimulation improves pollutant degradation and water quality. The implications of these findings suggest that aquatic animal-based bioremediation is a promising and environmentally friendly approach to sustainable aquaculture, reducing reliance on antibiotics and chemical disinfectants while supporting ecological balance and animal health.
subject: Articles
  topic: section
subject: Aquatic Animals
  topic: keywords
subject: Bioremediation
  topic: keywords
subject: Water Quality
  topic: keywords
creator: Frentina Murti Sujadi
creator: Jefri Anjaini
creator: Baruna Kusuma
creator: Asro Nurhabib
creator: Lilik Setiyaningsih
creator: Setyo Budi Kurniawan
rights: Copyright (c) 2025 Journal of Fish Health
date: 2025-08-22
publication date: 2025-08-22
starting page: 418
ending page: 425
doi: 10.29303/jfh.v5i3.7942

Growth of African Catfish (Clarias gariepinus) Cultured Using the Biofloc System at Different Stocking Densities
type: item
description: The cultivation of African catfish (Clarias gariepinus) using a biofloc system is an aquaculture technology that integrates waste management and the production of natural feed in situ, thereby enhancing productivity efficiently. This research aimed to evaluate the effect of EM4 probiotic application in a biofloc system on the growth and survival rate of catfish under different stocking densities. The experiment was conducted using a Completely Randomized Design (CRD) with four stocking density treatments: P1 (30 fish/30 L), P2 (40 fish/30 L), P3 (50 fish/30 L), and P4 (60 fish/30 L), each with three replications. Observed parameters included absolute weight and length growth, floc content, hematocrit, hemoglobin, erythrocytes, leukocytes, differential leukocytes and water quality parameters. The treatment P4 showed the most notable effects, with a final absolute weight gain of 11.66 grams and an absolute length increase of 8.11 cm. Furthermore, the probiotic addition had a significant impact on erythrocyte levels and differential leukocyte counts. In contrast, the use of probiotics in the biofloc system did not result in significant differences in hematocrit levels, total leukocyte counts, or biofloc volume.
subject: Articles
  topic: section
subject: Biofloc
  topic: keywords
subject: Clarias gariepinus
  topic: keywords
subject: EM4 Probiotic
  topic: keywords
subject: Growth
  topic: keywords
subject: Stocking Density
  topic: keywords
creator: Nur Aisyah
creator: Andre Rachmat Scabra
creator: Laily Fitriani Mulyani
rights: Copyright (c) 2025 Journal of Fish Health
date: 2025-08-24
publication date: 2025-08-24
starting page: 426
ending page: 441
doi: 10.29303/jfh.v5i3.7917

Survival Rate of Barramundi (Lates calcarifer) Larvae Maintenance at Balai Besar Riset Budidaya Laut dan Penyuluhan Perikanan (BBRBLPP) Gondol
type: item
description: Barramundi (Lates calcarifer) is a high economic commodity that has euryhaline properties. The maintenance of barramundi larvae is quite crucial in its cultivation efforts. This study aims to determine the survival rate of barramundi during maintenance at the Balai Besar Riset Budidaya Laut dan Penyuluhan Perikanan (BBRBLPP) Gondol, Bali. The activity lasted for 35 days, observing the parameters of larvae development, type and variety of feed, and water quality. The feed used consisted of natural feed such as Rotifera sp., Nanochloropsis sp., and Artemia sp., as well as artificial feed in the form of PSP and KAIO 3. Feeding was carried out gradually according to the age of larvae with adjusted frequencies and doses. The results showed that larvae showed progressive morphological and behavioral development from day 0 to day 27. The survival rate achieved was 79% of the total 40,000 larvae released, far exceeding the SNI standard (20%). Water quality during maintenance was within the optimal range. Additional efforts such as adding probiotic, daily siphoning, and water changes contributed to successful rearing. These results demonstrate that the combination of good feed and optimal water quality management significantly influences the success of barramundi larval cultivation. This study provides an important foundation for the development of efficient and sustainable large-scale barramundi cultivation.
subject: Articles
  topic: section
subject: Barramundi
  topic: keywords
subject: Lates calcarifer
  topic: keywords
subject: Larvae
  topic: keywords
subject: Survival Rate
  topic: keywords
subject: Feed
  topic: keywords
creator: Nanda Wahyuni Al Humaero
creator: Damai Diniariwisan
rights: Copyright (c) 2025 Journal of Fish Health
date: 2025-08-31
publication date: 2025-08-31
starting page: 457
ending page: 465
doi: 10.29303/jfh.v5i3.7882

Development Strategy to Increase Sales of Frozen Fish Products Produced by CV. Novira Abadi
type: item
description: Indonesia is known as a maritime country with a sea area of 3.25 million km², accounting for about 63% of its total territory. The sustainable potential of Indonesia’s marine fish production is estimated at 6.51 million tons per year, or around 8.2% of the world’s total potential. Banda Aceh is one of the coastal cities with enormous fisheries potential. Its waters are rich in fish resources, offering significant opportunities for the development of the fisheries industry. However, this potential has not been fully optimized. One major problem faced by the fisheries industry in Banda Aceh is the lack of effective marketing strategies, particularly in the frozen fish industry. CV. Novira Abadi, as one of the companies operating in this sector, often experiences unstable sales, resulting in uncontrolled stock accumulation. This condition is aggravated by the absence of an integrated marketing approach. This research aims to analyze the development strategy to improve frozen fish sales at CV. Novira Abadi through a SWOT analysis. A qualitative method was applied using observation and interviews. The SWOT analysis results show that opportunities scored the highest (1.92), followed by strengths (1.87), weaknesses (0.99), and threats (0.83). The company’s position in the SWOT matrix falls into quadrant I, indicating a favorable condition for implementing an aggressive growth strategy. The recommended strategies include developing new products, expanding distribution channels, and leveraging social media for promotion. Additionally, continuous market research and competitor analysis are necessary to strengthen competitiveness and ensure business sustainability for CV. Novira Abadi industry.
subject: Articles
  topic: section
subject: Development
  topic: keywords
subject: Frozen Fish Product
  topic: keywords
subject: SWOT
  topic: keywords
subject: CV. Novira Abadi
  topic: keywords
creator: Imelda Agustina
creator: Azrul Fahrizal
creator: Junaidi M. Affan
creator: Ahmad Fauzan Lubis
creator: Ratna Mutia Aprilla
creator: Ricky Winrison Fuah
creator: Alvi Rahmah
rights: Copyright (c) 2025 Journal of Fish Health
date: 2025-11-08
publication date: 2025-11-08
starting page: 503
ending page: 511
doi: 10.29303/2kbk4y11

Analysis of Perception and Compliance of Sibolga Purse Seine Fishermen Based on Licensed Fishing Ground
type: item
description: The purse seine fishery in Sibolga plays a vital role in fish production but faces challenges regarding compliance with licensed fishing ground regulations. Non-compliance, driven by economic pressure and declining fish stocks, threatens resource sustainability and fishermen’s welfare. This study aimed to analyze fishermen’s perceptions and compliance levels regarding the use of licensed fishing areas and their relationship to regulatory enforcement. The research was conducted from January-March 2024 at Sibolga Archipelago Fishing Port, North Sumatra, one of the main landing bases for purse seine vessels. Data were collected from 115 respondents, consisting of vessel captains and mates, using structured questionnaires and direct interviews. Observations and secondary data from fisheries institutions supported the primary data. Data were analyzed using descriptive statistics and the non-parametric Kruskal–Wallis test to determine differences in perceptions and compliance among fishing groups categorized by vessel tonnage and fishing zones. The results showed that fishermen’s perceptions of potential fishing grounds and fish resource availability were relatively uniform across groups, indicating a shared view that fishing effort continues to expand to secure catches. In contrast, perceptions of VMS usage differed significantly, with the 30–100 GT small pelagic purse seine group acknowledging its role in detecting violations. Compliance levels also varied, with the 30–100 GT small pelagic purse seine operating in <12-mile zones showing the lowest compliance. It is concluded that stricter enforcement, effective monitoring, and targeted empowerment programs are necessary to enhance compliance and ensure sustainable fisheries management in Sibolga.
subject: Articles
  topic: section
subject: Purse Seine
  topic: keywords
subject: Fishermen’s Perception
  topic: keywords
subject: VMS
  topic: keywords
subject: Compliance
  topic: keywords
subject: Licensed Fishing Ground
  topic: keywords
creator: Rosi Rahayu
creator: Ricky Winrison Fuah
rights: Copyright (c) 2025 Journal of Fish Health
date: 2025-08-29
publication date: 2025-08-29
starting page: 442
ending page: 456
doi: 10.29303/jfh.v5i3.7867

Effectiveness Test of Aquaculture Systems: Green Water, Biofloc, and Aquaponic Systems on the Stress Response of Snakehead Fish (Channa striata)
type: item
description: Water quality is a key factor in the cultivation of snakehead fish (Channa striata) because it can influence the level of physiological stress that impacts the health and growth of the fish. Three cultivation systems commonly used to manage water quality sustainably are the green water system, biofloc, and aquaponics. All three have different approaches to recycling waste and maintaining the balance of the cultivation environment. This study aims to compare the effectiveness of the three systems in maintaining water quality and reducing physiological stress in snakehead fish. The method used was a Completely Randomized Design (CRD) with three treatments and three replications. The parameters observed included levels of ammonia, nitrite, nitrate, dissolved oxygen (DO), and blood glucose levels as an indicator of stress. The results showed that the biofloc system produced the lowest blood glucose level (54 mg/dL), as well as the lowest nitrite and nitrate concentrations compared to the other treatments. Meanwhile, the biofloc system green water produces ammonia and dissolved oxygen (DO) levels, but biofloc is the most stable in maintaining water quality and the health of snakehead fish.
subject: Articles
  topic: section
subject: Fish Stress Response
  topic: keywords
subject: Water Quality
  topic: keywords
subject: Green Water
  topic: keywords
subject: Biofloc
  topic: keywords
subject: Aquaponics
  topic: keywords
creator: Rani Ria Rizki
creator: Maya Resta Kanya
creator: Rizki Eka Puteri
creator: Donny Prariska
creator: Siti Lestari
creator: Guttifera
creator: Selly Ratna Sari
rights: Copyright (c) 2024 Journal of Fish Health
date: 2025-07-29
publication date: 2025-07-29
starting page: 273
ending page: 281
doi: 10.29303/jfh.v4i4.7838

Growth and Hematological Response of Common Carp (Cyprinus carpio) to Dietary Supplementation with Water Hyacinth (Eichhornia crassipes) Extract
type: item
description: This study examined the effects of dietary supplementation with Eichhornia crassipes leaf extract on the growth performance and hematological parameters of common carp (Cyprinus carpio). Phytochemical screening confirmed the presence of bioactive compounds such as flavonoids, alkaloids, and saponins, with moderate antioxidant activity (50.89% DPPH inhibition). Experimental treatments showed that fish receiving moderate levels of the extract had significantly higher erythrocyte and leukocyte counts, indicating improved oxygen transport and immune function. Additionally, the group with the highest absolute weight gain suggests better nutrient absorption. All treatments maintained a 100% survival rate and stable water quality, confirming the extract’s safety and environmental compatibility. These results support the use of E. crassipes as a sustainable, cost-effective, and environmentally friendly alternative to synthetic growth promoters in aquaculture. Further research is recommended to investigate its long-term effects and mechanisms of action.
subject: Articles
  topic: section
subject: Eichhornia crassipes
  topic: keywords
subject: Common Carp
  topic: keywords
subject: Phytogenic Feed Additives
  topic: keywords
subject: Hematology
  topic: keywords
subject: Growth
  topic: keywords
creator: Marselia Aisyah Putri
creator: Nunik Cokrowati
creator: Bagus Dwi Hari Setyono
rights: Copyright (c) 2025 Journal of Fish Health
date: 2025-07-23
publication date: 2025-07-23
starting page: 351
ending page: 364
doi: 10.29303/jfh.v5i3.7800

Immunostimulation of Nile Tilapia Through the Provision of Synbiotic Feed (Eleutherine bulbosa and Probiotic) to Prevent Motile Aeromonas Septicemia (MAS) Disease
type: item
description: Motile Aeromonas Septicemia (MAS) is one of the bacterial diseases that attacks and causes mass death of nile tilapia. Disease control in fish farming using synthetic antibiotics has caused problems in aquaculture, such as bacterial resistance to antibiotics, drug residues in fish, and water pollution. Therefore, alternative measures to control MAS that are safe and environmentally friendly, such as the application of immonostimulant that use organic ingredients, are needed. This research aims to determine potency of immunostimulation of nile tilapia trough feeding of synbiotic feed namely prebiotic Eleutherine bulbosa powder (Ebp) and probiotic containing Lactobacillus casei and Saccharomyces cerevisiae as for prevention MAS disease. The fish were reared for 21 days, in reared for the first 14 days, the fish were given synbiotic feed then for the next 7 days they were given feed without synbiotics. The fish were challenged with Aeromonas hydrophila on day 15th. Experimental design used was completely randomized design with four treatments: 0 g Ebp and 0 ml probiotics in 1 kg of feed (synbiotic free feed), 7.5 g, 10 g, and 12.5 g Ebp each with 15 ml probiotics in 1 kg of feed. The results showed that feeding the fish with synbiotic feed, especially the treatment Ebp12.5, give significantly different results on parameters prevalence, fish recovery, survival rate of the fish test. This research concluded that treatment of Ebp 12.5 was the best dosage of immunostimulant to prevent MAS disease in nile tilapia.
subject: Articles
  topic: section
subject: Nile Tilapia
  topic: keywords
subject: Synbiotic Feed
  topic: keywords
subject: Immunostimulation
  topic: keywords
subject: MAS Disease
  topic: keywords
creator: Hasmin
creator: Muhaimin Hamzah
creator: La Ode Baytul Abidin
rights: Copyright (c) 2025 Journal of Fish Health
date: 2025-08-18
publication date: 2025-08-18
starting page: 407
ending page: 417
doi: 10.29303/jfh.v5i3.7650

The Effect of Egg White Powder Concentration on The Quality of Meatballs Based on Surimi from Tilapia, Catfish and Pangasius
type: item
description: Surimi is a processed freshwater fish product which is the main raw material for various food products, one of which is fish meatballs. The use of freshwater fish has disadvantages in terms of sensory characteristics, so it is necessary to add other ingredients. One of the additional ingredients that has great potential to affect the characteristics of fish meatball surimi is EWP. This study aims to determine the effect of EWP concentration in surimi from different types of freshwater fish on the characteristics of sensory properties, pH, and yield. The variations in EWP concentration used were 0%; 3% and 6%. Sensory testing included appearance, texture, taste, and aroma. The results showed that appearance, texture, taste and aroma had a significant effect with the best treatment of 0% EWP on catfish and pangasius meatball surimi and 3% EWP on tilapia meatball surimi. The effect of variations in EWP concentration on the pH value of fish meatball surimi did not have a significant effect. The best yield was obtained with the treatment of 6% EWP on each catfish, pangasius and tilapia surimi. The selected catfish and pangasius fish surimi meatballs were 0% EWP concentration while tilapia fish surimi meatballs were 3% EWP concentration because they provided the best meatball quality. The addition of EWP affected the appearance, taste, texture and aroma with the best treatment at a concentration of 3% EWP tilapia fish surimi meatballs and had no significant effect on the pH value, and the best yield at 6% EWP.
subject: Articles
  topic: section
subject: Surimi
  topic: keywords
subject: Meatballs
  topic: keywords
subject: Catfish
  topic: keywords
subject: Tilapia
  topic: keywords
subject: Pangasius
  topic: keywords
creator: Ferdiansyah
creator: Dwi Sara
creator: Kelvin
creator: Miko Apriansyah
creator: Falah Badruzzaman
creator: Hartoyo Notonegoro
rights: Copyright (c) 2025 Journal of Fish Health
date: 2025-07-30
publication date: 2025-07-30
starting page: 376
ending page: 387
doi: 10.29303/jfh.v5i3.7493

Cover, Editorial Boards, Table of Contents
type: item
description: Cover, Editorial Boards, Table of Contents
subject: Articles
  topic: section
creator: Andre Rachmat
rights: Copyright (c) 2025 Journal of Fish Health
date: 2025-06-26
publication date: 2025-06-26

The Effect of Different Salinity on Moulting of Mud Crab (Scylla serrata) in Controlled Media
type: item
description: Mud crab (Scylla serrata) is a fishery commodity that has high economic value and has a wide salinity tolerance so that its growth can be developed. The growth of mud crabs can be influenced by genetic traits such as moulting. In cultivation activities there are methods that can accelerate the moulting process such as environmental engineering (increasing and decreasing the salinity of the maintenance media) and mutilation. This study aims to determine the growth and fastest moulting time of crabs in media with different salinities in controlled media. The method used is an experimental method with a Completely Randomized Design (CRD) consisting of 5 treatments and 3 replications, namely: (Control), (P1: 5 ppt), (P2: 10 ppt), (P3: 15 ppt) and (P4: 20 ppt) which are given to mud crabs for 45 days. The results showed that at 5 ppt salinity obtained the fastest moulting time which was 24.3 days and the longest was at 20 ppt salinity for 39 days, while the highest growth was obtained in the 15 ppt salinity treatment with an average absolute weight of 27.3 grams and the lowest was in the control treatment with an average absolute weight of 18.3 grams.
subject: Articles
  topic: section
subject: Moulting
  topic: keywords
subject: Mud Crab
  topic: keywords
subject: Salinity
  topic: keywords
creator: Nurul Aeni
creator: Muhammad Marzuki
creator: Muhammad Sumsanto
rights: Copyright (c) 2025 Journal of Fish Health
date: 2025-06-25
publication date: 2025-06-25
starting page: 277
ending page: 288
doi: 10.29303/jfh.v5i2.7294

Differences in Eel (Monopeterus albus) Catch Results Using Fishing Gear Traps with Different Baits in Lopak Alai Village, Kumpeh Ulu District
type: item
description: Eel (Monopterus albus) is one of the freshwater fishery products that has high economic value which is widely caught in Lopak Alai Village, Kumpe Ulu District using bubu fishing gear. This study aims to determine the differences in eel catches using bubu fishing gear with different baits in Lopak Alai Village, Kumpe Ulu District. This research was conducted in Lopak Alai Village, Kumpeh Ulu District on January 12th - February 07th, 2025. The research method used was the experimental method. The total of bubu used in this study was 60 bubu with each placement of 5 meters, the size of the bubu used was 100 cm which consisted of 2 treatments, namely using earthworm bait and golden snail bait weighing 10 grams, each bait was placed into 30 bubu with 20 repetitions. The results of the study showed that the total of eel catches (Monopterus albus) with earthworm bait was 123 with an average weight of 611 g and an average length of 45 cm, while with golden snail bait it was 204 with an average weight of 1,393 g and an average length of 49 cm. The results of the t-test analysis showed that there were differences in the catches of eels with earthworm and golden snail bait.
subject: Articles
  topic: section
subject: Bait
  topic: keywords
subject: Earthworm
  topic: keywords
subject: Eel
  topic: keywords
subject: Golden Snail
  topic: keywords
subject: Latrine Fishing
  topic: keywords
creator: Dhea Alfebrianti
creator: Afriani H
creator: Rizky Janatul Magwa
creator: Bagus Pramunsintho
creator: Bs Monica Arfiana
creator: Ainun Rohmawati Bareta
rights: Copyright (c) 2025 Journal of Fish Health
date: 2025-07-24
publication date: 2025-07-24
starting page: 365
ending page: 375
doi: 10.29303/jfh.v5i3.7120

Optimization of Hatchery Techniques to Enhance Larval Survival and Business Feasibility of Guppy (Poecilia reticulata)
type: item
description: Optimizing hatchery techniques for guppy (Poecilia reticulata) production is essential for improving reproductive efficiency and economic viability in small-scale ornamental aquaculture. This study evaluated the effectiveness of a simplified spawning system using sterilized aquaria (40×60×40 cm) with aeration and aquatic vegetation to create a semi-natural environment. Broodstock selection based on gonadal maturity and a male-to-female ratio of 2:4 resulted in high spawning success, with courtship behavior observed by day three. A staged feeding strategy—infusoria and egg yolk (days 1–3), Artemia nauplii (days 4–10), and Tubifex (days 11–21)—supported consistent larval growth from 0.5 cm to 1.6 cm over three weeks. Larval survival reached 91.1%, with 162 of 168 fry surviving by day 21. Stable water quality parameters (24–26°C, 7.6–7.9 mg/L dissolved oxygen, pH 6.7–7.1) were maintained through regular siphoning and water renewal. Economic analysis indicated system feasibility, with a production cost of IDR 1,369,250, revenue of IDR 1,620,000, and net profit of IDR 250,750. The benefit-cost ratio (R/C) was 1.18, the break-even point was achieved at 136.93 fry, and the payback period was 17.7 months. These findings highlight the biological and financial viability of low-cost guppy hatchery systems suitable for rural aquaculture settings. Future research should focus on scaling potential, feed alternatives, and digital monitoring to improve system sustainability and profitability.
subject: Articles
  topic: section
subject: Guppy
  topic: keywords
subject: Hatchery
  topic: keywords
subject: Cost-Benefit Analysis
  topic: keywords
subject: Aquaculture
  topic: keywords
creator: Bagus Dwi Hari Setyono
creator: Nurtia Nikmatul Ula
creator: Rangga Idris Affandi
rights: Copyright (c) 2025 Journal of Fish Health
date: 2025-06-11
publication date: 2025-06-11
starting page: 266
ending page: 276
doi: 10.29303/jfh.v5i2.7093

Oyster Farming Management
type: item
description: Pacific oysters (Crassostrea gigas) are one of the major aquaculture commodities that contribute greatly to the Japanese fishing industry. This study aims to describe the oyster farming management system based on field research experience in Hyogo Prefecture, Japan. The method used was participatory observation for eight months, covering all stages of aquaculture from seed collection to post-harvest. Observations showed that oyster farming is carried out using the hanging raft method (ikada-suika-shiki), relying on natural food in the form of plankton with depth management and regular hanger rotation. A seed training process (yokusei) was also applied to increase the oyster's resistance to environmental stress. The growth rate of oysters in the rearing phase ranges from 0.25-0.35 grams per day, and harvesting is done during winter to produce high-quality meat. The implementation of efficient and systematic production management has proven to increase yield and product quality. These results suggest that oyster farming practices in Japan can serve as a reference in the development of sustainable oyster farming in Indonesia.
subject: Articles
  topic: section
subject: Oyster Farming
  topic: keywords
subject: Crassostrea sp.
  topic: keywords
subject: Farm Management
  topic: keywords
creator: Mahmudin Fajrin
creator: Junianto
rights: Copyright (c) 2025 Journal of Fish Health
date: 2025-07-31
publication date: 2025-07-31
starting page: 388
ending page: 393
doi: 10.29303/jfh.v5i3.7080

The Strategic Role of Biotechnology in Aquaculture: Integrating Upstream and Downstream Processes for Sustainable Fish Production
type: item
description: Aquaculture has become an essential contributor to global food security, yet its rapid expansion presents significant challenges, including disease outbreaks, environmental degradation, and feed inefficiency. Biotechnology offers transformative solutions across the entire aquaculture value chain ranging from upstream breeding and health management to downstream processing and product safety. This review examines the strategic role of biotechnological innovations in enhancing sustainability, productivity, and resilience in aquaculture systems. Key upstream applications include selective breeding, marker-assisted selection (MAS), recombinant DNA vaccines, and probiotic-supplemented feeds, all of which have demonstrated substantial improvements in growth rates, feed conversion, and disease resistance. In midstream operations, molecular diagnostics (e.g., qPCR, LAMP) and enzyme-assisted processing technologies ensure product quality and safety. Downstream, innovations such as biosensor-based cold chain monitoring, value-added probiotic fish products, and DNA-based traceability cater to evolving consumer demands and regulatory standards. The integration of emerging tools—such as CRISPR/Cas9 gene editing, RNA interference, metagenomics, and nanotechnology—further strengthens the aquaculture sector's capacity to adapt to climate stress and global market needs. Overall, this review highlights biotechnology as a pivotal enabler of sustainable intensification in aquaculture and underscores the need for policy support, technological accessibility, and interdisciplinary collaboration to realize its full potential.
subject: Articles
  topic: section
subject: Aquaculture
  topic: keywords
subject: Biotechnology
  topic: keywords
subject: Genetics
  topic: keywords
subject: Innovation
  topic: keywords
subject: Resilience
  topic: keywords
creator: Aisyah
creator: Yuli Andriani
rights: Copyright (c) 2025 Journal of Fish Health
date: 2025-08-11
publication date: 2025-08-11
starting page: 394
ending page: 406
doi: 10.29303/jfh.v5i3.7054

Biochemical Profile of Macroalgae: Analysis of Primary Metabolites and Hydrocolloid Content in Oenaek Waters During the Dry Season
type: item
description: Macroalgae are important components in coastal ecosystems, acting as primary producers, oxygen producers through photosynthesis, supporting biodiversity, and providing habitat for marine organisms. In addition to their ecological functions, macroalgae have great economic potential due to their bioactive compound content, including hydrocolloids and nutrient metabolites, which are utilized in the food, pharmaceutical, and cosmetic industries. Biochemical content such as protein, carbohydrates, and hydrocolloids in macroalgae varies greatly depending on species and environmental conditions, so site-specific research is needed. This study analyzed primary metabolites and hydrocolloid content of ten macroalgae species collected from the waters of Oenaek Village during the dry season. The parameters tested included water, ash, fat, protein, carbohydrate, and agar (in red algae) and alginate (in brown algae) content. The results showed that the water content ranged from 1.51% to 29.16%, ash ranged from 0.05%–0.58%, fat ranged from 5.4%–28%, protein ranged from 1.82%–8.54%, and carbohydrates ranged from 50.3%–87.92%. The highest agar content was found in Gracilaria gracilis (19.6%) and the highest alginate in Sargassum polycystum (33.96%). Green algae do not contain hydrocolloids but have the highest carbohydrate content. The biochemical profile indicates that macroalgae from Oenaek have great potential for industrial applications, especially as a source of hydrocolloids and nutritional compounds.
subject: Articles
  topic: section
subject: Macroalgae
  topic: keywords
subject: Primary Metabolites
  topic: keywords
subject: Hydrocolloid
  topic: keywords
subject: Oenaek
  topic: keywords
creator: Yustina Putri Tiara Demoor
creator: Marcelien Djublina Ratoe Oedjoe
creator: Yuliana Salosso
rights: Copyright (c) 2025 Journal of Fish Health
date: 2025-07-23
publication date: 2025-07-23
starting page: 339
ending page: 350
doi: 10.29303/jfh.v5i3.7020

Construction Suitability of Trammel Net Operated by Kotabaru Fisherman Based on SNI 01-7237-2006
type: item
description: Trammel net is a type of gill net. Usually, fishermen operate trammel nets to catch shrimp. Many fishermen build trammel nets traditionally without going through a standard design and construction process. They bought webbing on the market to assemble them into three layers of net and equipped with rope components and buoys, sinker, and selvedge. Meanwhile, to realize the effectiveness of fishing and managing fisheries activities, the government regulates the standard form of trammel net through SNI 01-7237-2006. Thus, it is necessary to evaluate the suitability of the standard form of trammel net based on SNI rules. This research was conducted using a quantitative descriptive method. The research locations are in three villages which are fishing bases for trammel net fishermen in Kotabaru Waters, namely: Pantai Village; Salino Village; and Sungai Pasir Village. The results from the three trammel net sample sizes: small; medium and large have scores of 89%; 95%; and 95% which are in the very suitable category.
subject: Articles
  topic: section
subject: Design
  topic: keywords
subject: Fishing Gear
  topic: keywords
subject: Standard
  topic: keywords
creator: Mihrobi Khalwatu Rihmi
creator: Hidayatul Aisytu Nurul Akbar
creator: Ledhyane Ika Harlyan
creator: Tri Djoko Lelono
rights: Copyright (c) 2025 Journal of Fish Health
date: 2025-07-23
publication date: 2025-07-23
starting page: 331
ending page: 338
doi: 10.29303/jfh.v5i3.6840