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Journal of Fish Health (JFH) Department of Aquaculture Faculty of Agriculture, Mataram University Jl. Pendidikan No. 37 Mataram, 83125
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Journal of Fish Health
Published by Universitas Mataram
ISSN : -     EISSN : 27982955     DOI : https://doi.org/10.29303/jfh.v2i2
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
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 two times a year in June and December. We accept review papers and full research articles. The Journal of Fish Health’s scope includes:  1. Fish Pharmaceutical 2. Fish Environmental Health 3. Microbiology 4. Biotechnology 5. Parasitology, etc. 6. Aquaculture 7. Management of Water Resources 8. Fishery Technology 9. Capture Fisheries Technology 10. Marine Science and Technology 11. Fisheries Agribusiness The Journal of Fish Health (JFH) accepts manuscripts written in English and Bahasa (Indonesian). The Journal of Fish Health (JFH) only processes submitted original script related to the scope of fish health and not being published by other publishers. The Journal of Fish Health (JFH) is jointly published by the Department of Aquaculture, Faculty of Agriculture, Mataram University. We strongly prefer to receive manuscripts via our online submission system. Using this system, authors can upload manuscript files (text, figures, and supplementary information) directly to our system and check on the status of their manuscripts during the review process. First, kindly please register as the author, and then you should log in to submit your papers. Please don´t forget to tick the author when you make a registration.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Perairan
Articles 265 Documents
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Cover, Editorial Boards, Table of Contents Andre Rachmat Scabra
Journal of Fish Health Vol. 6 No. 2 (2026): Journal of Fish Health
Publisher : Study Program of Aquaculture, Department of Fisheries and Marine Science, Faculty of Agriculture, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/r4jfdv02

Abstract

Cover, Editorial Boards, Table of Contents
Analysis of Nitrate, Nitrite, and Orthophosphate Content in the Waters of Lembar Bay Damai Diniariwisan; Rizky Regina Kawirian; Yuliana Asri
Journal of Fish Health Vol. 6 No. 2 (2026): Journal of Fish Health
Publisher : Study Program of Aquaculture, Department of Fisheries and Marine Science, Faculty of Agriculture, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jfh.v6i2.10903

Abstract

Lembar Bay is a coastal ecosystem utilized for fisheries, port activities, aquaculture, and human settlements, making it vulnerable to changes in water quality due to natural and anthropogenic nutrient inputs. This study aimed to analyze nitrate, nitrite, and orthophosphate concentrations as indicators of water quality in Lembar Bay, West Lombok, Indonesia. A quantitative descriptive method was employed by collecting seawater samples from five sampling stations representing mangrove, open coastal, port, traditional aquaculture, and residential areas during May 2026. Water samples were analyzed for nitrate, nitrite, and orthophosphate concentrations, while water temperature, salinity, and pH were measured as supporting physicochemical parameters. The results showed that nitrate concentrations ranged from 0.02 to 0.07 mg/L, nitrite from 0.001 to 0.009 mg/L, and orthophosphate from 0.001 to 0.06 mg/L. Nitrate concentrations were relatively high compared with the marine water quality standard for aquatic biota, particularly in the mangrove area, indicating substantial nutrient inputs from organic matter decomposition and terrestrial runoff. In contrast, nitrite concentrations remained low, suggesting that nitrogen transformation processes were functioning efficiently, while orthophosphate concentrations reflected low to moderate trophic conditions that were still capable of supporting primary productivity. Overall, the water quality of Lembar Bay remains suitable for sustaining aquatic organisms. However, the elevated nitrate concentration highlights the need for continuous monitoring and effective nutrient management to prevent eutrophication and maintain the ecological sustainability of the coastal ecosystem.
The Effectiveness of Betel (Piper betle Linn.) Leaf Extract in Controlling Argulus sp. in Koi Carp (Cyprinus carpio) Luh Gede Sumahiradewi; Hamid; Adyan Mukhlas
Journal of Fish Health Vol. 6 No. 3 (2026): Journal of Fish Health
Publisher : Study Program of Aquaculture, Department of Fisheries and Marine Science, Faculty of Agriculture, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jfh.v6i3.10354

Abstract

Koi (Cyprinus carpio) are a type of ornamental fish with high economic value. The main problem faced by koi fish business operators and enthusiasts is infestation by the parasite Argulus sp. This study aims to determine the effectiveness of betel leaf extract in controlling Argulus sp. parasites in koi fish and to determine the most effective dose of betel leaf extract for controlling Argulus sp. parasites in koi fish. This study used a completely randomized design (CRD) with 4 treatments: Treatment K (control) with a betel leaf extract dose of 0 mL/L, Treatment 1 (P1) with a dose of 25 mL/L, Treatment 2 (P2) at a dose of 30 mL/L, Treatment 3 (P3) at a dose of 35 mL/L, and three replicates for each. The observed parameters included Argulus sp. mortality, fish survival rate (SR), behavioral response, and water quality. The results of the study showed that betel leaf extract had a significant effect (p<0.05) on the mortality of Argulus sp., with the highest value observed in P3 at a dose of 35 mL/L (98%), while the highest survival rate was obtained in P2 at a dose of 30 mL/L (93.33%).
Antioxidant Activity Identification of Crude Extract of Halimeda sp. From the Seribu Islands Using Different Testing Methods (DPPH, CUPRAC, and FRAP) Siti Balqis Huriyah; Sujaka Nugraha; Suci Lestari; Yohanes Harvinda
Journal of Fish Health Vol. 6 No. 3 (2026): Journal of Fish Health
Publisher : Study Program of Aquaculture, Department of Fisheries and Marine Science, Faculty of Agriculture, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jfh.v6i3.10801

Abstract

The green seaweed from the genus Halimeda is a marine biological resource that holds promise as a source of bioactive compounds, such as antioxidant compounds. The antioxidant activity may differ based on the assay technique since each technique relies on a unique reaction mechanism. This research intended to assess the antioxidant properties of crude Halimeda sp. extract from the Seribu Islands employing three techniques: DPPH, CUPRAC, and FRAP. The sample was obtained through maceration with methanol and subsequently assessed for free radical scavenging activity and metal ion reduction capability. The findings indicated that the CUPRAC method yielded the greatest antioxidant activity, scoring 147.91 µmol Trolox/g extract, while the FRAP method followed with 83.61 µmol Trolox/g extract. The DPPH method generated an IC₅₀ value of 226.09 mg/L. These varying values suggest that the chemical properties of the compounds in the extract react differently to each testing principle. Consequently, employing several antioxidant assays is essential for a more thorough assessment of the antioxidant capacity of Halimeda sp. seaweed extract.
One Percent Dietary Spirulina (Arthrospira platensis) Improves Color Brightness and Growth Performance in Zebrafish (Danio rerio) Husenudin Hatmo; Sitti Hilyana; Bagus Dwi Hari Setyono
Journal of Fish Health Vol. 6 No. 3 (2026): Journal of Fish Health
Publisher : Study Program of Aquaculture, Department of Fisheries and Marine Science, Faculty of Agriculture, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jfh.v6i3.10845

Abstract

Spirulina (Arthrospira platensis) is widely used in ornamental fish diets because it contains carotenoids, phycocyanin, protein, vitamins, and other bioactive compounds that may enhance pigmentation and support growth. However, the optimal dietary inclusion level of spirulina for zebrafish (Danio rerio) remains unclear, particularly when colour performance and growth responses are evaluated simultaneously. This study examined the effects of dietary spirulina supplementation on colour performance, growth, and physiological responses in zebrafish. A 30-day feeding trial was conducted using a completely randomized design with four treatments: 0%, 1%, 3%, and 5% spirulina inclusion, each with three replicate aquaria. Data were analyzed using one-way ANOVA, with Welch ANOVA and Kruskal–Wallis tests used to assess result robustness. Dietary spirulina significantly affected RGB brightness, length gain, and weight gain. The most consistent improvement occurred at 1% inclusion. The highest RGB brightness (83.81 ± 2.13), length gain (0.18 ± 0.01 cm), and weight gain (0.15 ± 0.03 g) were recorded in the 1% treatment, which outperformed the control and higher inclusion levels. Total colour score and specific growth rate also tended to peak at 1%, although these responses showed lower statistical stability under non-parametric analysis. Condition factor, survival, and abnormality were not significantly affected by dietary treatment. Overall, 1% dietary spirulina supplementation provided the most effective balance between improved colour appearance and growth performance, while higher inclusion levels did not produce additional benefits under the tested conditions.
Polyvinyl Chloride Microplastic Exposure Alters Body Colour and Reduces Condition Factor in Guppy (Poecilia reticulata) Rifki Rijal Hapriawan; Bagus Dwi Hari Setyono; Muhammad Sumsanto
Journal of Fish Health Vol. 6 No. 3 (2026): Journal of Fish Health
Publisher : Study Program of Aquaculture, Department of Fisheries and Marine Science, Faculty of Agriculture, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jfh.v6i3.10901

Abstract

Polyvinyl chloride (PVC) microplastics may compromise fish health, but visible sublethal responses in ornamental fish remain poorly documented. This study evaluated whether nominal PVC microplastic exposure altered CIE L*a*b* body-colour indices, Fulton's condition factor, and survival of guppy (Poecilia reticulata). A completely randomized design included 0, 5, 15, and 20 mg/L PVC treatments, each with three aquaria stocked with 10 fish and maintained for 45 days. Treatment means were evaluated by one-way analysis of variance and Duncan's multiple range test. The 15 and 20 mg/L treatments produced higher lightness and lower redness and yellowness than the control and 5 mg/L treatments. At 20 mg/L, survival declined to 66.67 ± 15.28% and the condition factor declined to 0.96 ± 0.13. These results show a marked fading of red and yellow body-colour components at 15 to 20 mg/L, while reduced survival and condition factor were most evident at 20 mg/L. Digital CIE L*a*b* metrics may therefore provide a practical visual endpoint for screening sublethal responses of ornamental fish to nominal PVC microplastic exposure. The study did not test the physiological mechanisms that generated the colour response.
Analysis of Seasonal Patterns of Mackerel (Scomberomorus sp.) in Belawan Samudera Fishery Port Vanesa Marsela Katarina Hutahaean; Ester Restiana Endang Gelis; Lisna Lisna; Bs Monica Arfiana; Dwinda Pangentasari; Afriani Harahap
Journal of Fish Health Vol. 6 No. 3 (2026): Journal of Fish Health
Publisher : Study Program of Aquaculture, Department of Fisheries and Marine Science, Faculty of Agriculture, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jfh.v6i3.10736

Abstract

Mackerel (Scomberomorus sp.) is a large pelagic fish from the Scombridae family that lives in schools and is migratory. This commodity has high economic value and is one of the important catches landed at the Belawan Ocean Fisheries Port (PPS), WPPNRI 571. However, mackerel production shows fluctuations from year to year. This study aims to analyze the catch and seasonal patterns of mackerel fishing at the Belawan PPS. The study was conducted in January-February 2026 using a quantitative descriptive survey method utilizing secondary data from the Belawan PPS fisheries logbook for 2021-2025. The analysis included calculating Catch Per Unit Effort (CPUE), standardizing fishing gear using the Fishing Power Index (FPI), estimating Maximum Sustainable Yield (MSY) and optimum effort using the Schaefer model, calculating the Total Allowable Catch (TAC), utilization levels, and fishing seasonal patterns using the average percentage method based on time series. The results showed an average annual production of mackerel fish of 34,048 tons. The highest CPUE value occurred in 2021 at 0.55 tons/trip and the lowest in 2025 at 0.03 tons/trip. The MSY value obtained was 150,957 tons/year with an optimum effort of 1,401.702 trips and a TAC of 120,765 tons/year. The average utilization rate of 23% indicates that the resource is still underfished. The peak fishing season occurs in May, July, October, and November, while the lean season occurs in February, March, April, August, and December. The results indicate that mackerel resources in the Belawan PPS still have the potential for sustainable utilization.
Growth Response and Final Biomass of Amphipods Phronima sp. to Gradual Salinity Reduction in Controlled Culture System Meisi Auliani; Thoy Batun Citra Rahmadani; Warih Hardanu
Journal of Fish Health Vol. 6 No. 3 (2026): Journal of Fish Health
Publisher : Study Program of Aquaculture, Department of Fisheries and Marine Science, Faculty of Agriculture, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jfh.v6i3.11077

Abstract

Phronima sp. is a marine amphipod with potential as a natural feed in fisheries cultivation activities. One of the challenges in its development is its ability to adapt to salinity changes during the research process. This study aims to analyze the effect of salinity decrease frequency on the growth of Phronima sp. The research used an experimental design with four treatments: salinity reduction of 5 ppt every 3 days (P1), every 2 days (P2), daily (P3), and control without salinity reduction (P4). Phronima sp. was reared for 21 days in 20 L containers with a density of 10 individuals/L. Observed parameters included absolute weight growth, absolute length growth, Specific Growth Rate (SGR), population growth rate, and water quality parameters. Data were analyzed using ANOVA or Welch ANOVA at a 95% confidence level. The results showed that salinity reduction frequency had no significant effect (P>0.05) on all growth parameters of both broodstock and juvenile Phronima sp. However, the P2 treatment showed the highest average values for absolute weight growth, SGR, and population growth rate. Water quality during the study remained within suitable ranges for Phronima sp. growth, with temperature of 26.5–29.6°C, pH of 8.25–8.50, and dissolved oxygen of 5.52–6.68 mg/L. These findings indicate that gradual salinity reduction to 0 ppt with different frequencies remains within the physiological tolerance of Phronima sp. and does not significantly affect its growth.
Effects of Four Hydrocolloid Binders on Paste-Feed Stability and Behavioral Acceptance by Rice Field Eels (Monopterus albus) Nurmahraini; Zaenal Abidin; Rangga Idris Affandi
Journal of Fish Health Vol. 6 No. 3 (2026): Journal of Fish Health
Publisher : Study Program of Aquaculture, Department of Fisheries and Marine Science, Faculty of Agriculture, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jfh.v6i3.6364

Abstract

Rice field eels (Monopterus albus) are economically valuable, but culture development is constrained by continued reliance on wild stocks and natural feeds. This study explored how alginate, carboxymethyl cellulose (CMC), guar gum, and carrageenan, each included at 0%, 10%, 15%, or 20%, affected the water stability of paste feed. A separate behavioral-acceptance assessment compared the control with 10% alginate, 15% CMC, 15% guar gum, and 15% carrageenan. Stability observations were conducted in triplicate. The available experimental records did not establish independent animal-level units for the acceptance assessment; therefore, acceptance outcomes are reported descriptively and should not be interpreted as confirmatory treatment effects. Water addition differed among formulations (approximately 5–20 mL), creating a confounding effect between binder treatment and moisture content. Under these conditions, feeds containing 10% guar gum or 10% carrageenan remained physically intact longer than the other tested formulations. Behavioral-response counts did not provide reliable evidence of differences among acceptance treatments. These findings are exploratory and identify guar gum and carrageenan formulations for further testing in experiments that standardize moisture content and use clearly defined, randomized, independent animal or tank replicates.
Evaluation of Soybean Meal Substitution with Padina australis on Growth Performance and Feed Utilization Efficiency of Nile Tilapia (Oreochromis niloticus) La Ikhsan; Muhaimin Hamzah; La Ode Baytul Abidin
Journal of Fish Health Vol. 6 No. 3 (2026): Journal of Fish Health
Publisher : Study Program of Aquaculture, Department of Fisheries and Marine Science, Faculty of Agriculture, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jfh.v6i3.11079

Abstract

The increasing cost and sustainability concerns associated with conventional plant-protein ingredients have intensified the search for locally available functional feed materials for Nile tilapia. This study evaluated the effects of partially replacing soybean meal with the brown macroalga Padina australis meal on growth performance, feed utilization, and survival of Nile tilapia (Oreochromis niloticus). A 42-day feeding trial was conducted using a completely randomized design with four dietary treatments and three replicates. The treatments were TP-0 (30 g soybean meal; 100% soybean meal), TP-7.5 (7.5 g P. australis meal + 22.5 g soybean meal), TP-15 (15 g P. australis meal + 15 g soybean meal), and TP-22.5 (22.5 g P. australis meal + 7.5 g soybean meal). Fish with an initial body weight of 10.53 ± 0.34 g were stocked at six fish per aquarium and fed at 5% biomass day⁻¹. The measured variables included survival rate, weight gain, specific growth rate, feed intake, feed conversion ratio, and feed efficiency. Dietary treatment did not significantly affect any measured parameter (P > 0.05). Nevertheless, TP-7.5 produced the most favorable biological response, as indicated by the highest weight gain (6.21 ± 1.09 g), the highest specific growth rate (2.28 ± 0.21% day⁻¹), the lowest feed conversion ratio (3.75 ± 0.37), and the highest feed efficiency (26.81 ± 2.48%). These findings indicate that P. australis meal can be considered a low-inclusion functional ingredient in Nile tilapia diets, although higher inclusion levels require further nutritional optimization through balanced protein and energy formulation.

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