Global Journal of Fisheries Science

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GLOBAL JOURNAL OF FISHERIES SCIENCE
Integrity Research Journals

ISSN: 2782-750X
Model: Open Access/Peer Reviewed
DOI: 10.31248/GJFS
Start Year: 2018
Email: gjfs@integrityresjournals.org

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GJFS Articles

Influence Of Heavy Metals Toxicity On Bioaccumulation And Histopathological Changes In The Tissues Of Clarias Gariepinus (burchell, 1822) At Watari Reservoir Of Bagwai In Kano State, Nigeria
Authors:  Jamila Muhammad Juma’ah, Mustapha Baba Geidam*, Abubakar Bala Abdullahi, Yakubu Ali Musa, Lawan Alhaji Ahmed and Balarabe Usman Getso
https://doi.org/10.31248/GJFS2025.092   |   Article Number: 4EFA143D2
This research assessed the impacts of pollution status on the reservoir that revealed insight into the bioaccumulation and histopathological changes in gills and liver tissues of C. gariepinus between February and September 2023. The atomic absorption spectrophotometer, Leica DM 750 microscope and Leica ICE 50 HD were used for heavy metals concentrations and... Continue here
Brown Trout Redd Locations In Spearfish Creek, In The City Of Spearfish, South Dakota, Usa, In The Fall Of 2025
Authors:  Grace Boysun, Jill M. Voorhees, Abigail Domagall and Michael E. Barnes*
https://doi.org/10.31248/GJFS2026.101   |   Article Number: 361E69FF3
A naturally-reproducing brown trout (Salmo trutta) population exists in the reach of Spearfish Creek in the city of Spearfish, South Dakota, USA. This study recorded redd spawning locations and environmental factors in three different sections within this reach in 2025. The first redd was observed on 3 October, and the last redds were observed on 7 November. A... Continue here
Stock Assessment And Management Of Freshwater Mullet, Planiliza Abu In The East Hammar Marsh, Iraq
Authors:  Entisar K. Hamed, Abdul-razak M. Mohamed* and Jassim M. Abed
https://doi.org/10.31248/GJFS2026.102   |   Article Number: 5D6A940B1
The present study assessed various parameters of freshwater mullet, Planiliza abu, in the East Hammar marsh, including growth parameters, mortality rates, probability of capture, recruitment pattern, yield-per-recruit, and virtual population analysis, using FiSAT II software. Monthly specimens were collected from November 2023 to October 2024, totalling 4,274... Continue here
Recirculating Aquaculture System-reared Juvenile Walleye Survived And Grew After Stocking In Owen Dam, South Dakota, Usa
Authors:  Andrew S. Marchant, Bill H. Miller, Gene Gallinat, Cody Treft, Jill M. Voorhees and Michael E. Barnes*
https://doi.org/10.31248/GJFS2026.104   |   Article Number: 6965C9FC2
Recirculating aquaculture system (RAS) technology is increasingly used to produce fish in recreational and conservation fish hatcheries. However, little is known about the post-stocking survival of RAS-reared walleye (Sander vitreus). This study evaluated the survival and growth of RAS-reared walleye stocked in Owen Dam, South Dakota, USA. RAS-reared juvenile... Continue here
Bacterial Load And Pathogenic Isolates In Commercially Important Freshwater Fish From River Niger, Onitsha, Nigeria: Food Safety Implications
Authors:  Ikeogu, C. F.*, Okpala-ezennia, K. P. and Chukwudi, O. G.
https://doi.org/10.31248/GJFS2026.105   |   Article Number: 9106327F1
Maintaining the microbiological safety of fish is essential for safeguarding public health, particularly in freshwater systems increasingly impacted by anthropogenic activities. This study evaluated the bacterial load and diversity of three commercially important freshwater fish species (Citharinus citharus, Marcusenius kainjii, and Synodontis membranaceus)... Continue here
Accumulation Of Heavy Metals In The Muscle Tissues Of Smoked Tilapia, Catfish, And African Lungfish Sold By Fish Vendors Along The Komodugu River, Yobe State, Nigeria
Authors:  Adamu, L., Musa, A.r.*, Muhammad, B.k., Zangina, A.m., Abdullahi, A.a., Makinde, O.j., Zango, M.h., Mohammed, A., Baraya, H.g. and Muhammad U.m.
https://doi.org/10.31248/GJFS2026.106   |   Article Number: E83488492
Heavy metal contamination in aquatic ecosystems poses serious health risks to both aquatic life and humans. The tissue-specific bioaccumulation of these metals in fish from polluted waters can result in life-threatening illnesses or even mortality. In the Komodugu River region, limited research has been conducted to evaluate heavy metal concentrations in fish... Continue here
Production And Consumption Of Fish And Fishery Products In Uganda: Trends, Status, And Implications For Food And Nutrition Security
Authors:  Caleb I. Adewale* and Uttam Deb
https://doi.org/10.31248/GJFS2026.108   |   Article Number: 4B5D6F753
Fish and fishery products provide a variety of essential vitamins, minerals, and fatty acids in addition to their high-quality protein. Fish is a significant source of animal protein in Uganda, accounting for about 50% of animal protein intake. They also play an important role in enhancing household income and food and nutritional security in Uganda. Uganda has... Continue here
Ecotoxicological Assessment Of Fieldklear Herbicide In Juvenile African Catfish (clarias Gariepinus) Under Static-renewal Conditions In Imo State, Nigeria
Authors:  Chizurum Utah, Malachy Nwigwe Okechukwu Ajima, Abdulrahman Jibril Bunu, Emmanuel Uchenna Cyril, Ogueri Chukwuma, Chukwuka Fabian Ezeafulukwe, Emperor Egwu Eluu, Juliet Ifeoma Uzoma and Okechukwu Kenneth Wokeh*
https://doi.org/10.31248/GJFS2026.110   |   Article Number: A45BB7B84
Limited information exists on the ecotoxicological effects of Fieldklear herbicide on freshwater fish species despite its increasing application in agricultural systems. This study investigated the acute toxicity and sublethal impacts of Fieldklear herbicide on water quality and behavioural responses of juvenile Clarias gariepinus. Acute toxicity bioassays were... Continue here
Ammonia Levels During Walleye (sander Vitreus) Egg Development
Authors:  Morgyn Barker, Jill M. Voorhees and Michael E. Barnes*
https://doi.org/10.31248/GJFS2026.111   |   Article Number: 2C8F07461
This study documented ammonia levels in walleye (Sander vitreus) eggs shortly after fertilization until hatch. Walleye eggs from Merritt Reservoir, Nebraska, USA were incubated at 16℃ in 9.5-cm diameter Petri dishes containing 30 mL of well water with a pH of 7.6 and alkalinity (as CaCO₃) of 210 mg/L. Ten dishes were used, with each containing 20 randomly selected... Continue here
Water Quality As A Driver Of Aquatic Biodiversity In Integrated Rice-fish Culture Systems In Ebonyi State, Nigeria
Authors:  Jude Chiemela Jude Jr*, Michael Chidobi Madu-asebo, Godwin Simon Adaka and Izuchukwu Obani
https://doi.org/10.31248/GJFS2026.113   |   Article Number: BEFD98542
Integrated rice–fish farming is a sustainable production system that enhances food production while supporting freshwater biodiversity. This study evaluated the influence of water quality on aquatic biodiversity in integrated rice–fish culture systems in Ebonyi State, Nigeria. Field experiments were conducted from June 2022 to December 2023 in Ezza... Continue here
Effects Of Fish Sellers’ (fatoma) Climate Change Perception On Employment Opportunities In Fish Trade Value-chain In Lake Chad, Borno State, Nigeria
Authors:  Muhammad Shettima Daluma*, Yusuf Adamu Baba and Aliyu Mohammed Gidado
https://doi.org/10.31248/GJFS2026.103   |   Article Number: 0C49E6A81
With the reduction in the volume and the surface area of Lake Chad over the years due to extreme weather conditions, the fish output has been grossly affected. Due to this fluctuation in fish production, fishing opportunities have been reduced. Over 96% of fishing communities in Lake Chad derive about 80%-90% of their income from fishing. The study looked at how... Continue here
Prevalence, Multidrug Resistance, And Multiple Antibiotic Resistance Index Of Vibrio Cholerae And Vibrio Parahaemolyticus In Wild-caught Fishes From Two Major Dams In Ibadan, Nigeria
Authors:  Selim A. Alarape*, Abdulroqeeb A. Oladele and Ismail O. Badmus
https://doi.org/10.31248/GJFS2026.114   |   Article Number: 5C4207912
The emergence of AMR in aquatic environments poses significant public health risks, particularly through foodborne transmission pathways. This study investigated the prevalence, antimicrobial resistance patterns, and multiple antibiotic resistance (MAR) indices of Vibrio cholerae and Vibrio parahaemolyticus isolated from wild-caught fish obtained from Eleyele and... Continue here
Effect Of Piper Guineense Seed Powder On The Proximate Composition And Mortality Of Dermestes Maculatus Infesting Smoked Heterobranchus Bidorsalis
Authors:  Jude Chiemela Jude*, Adaka Godwin Simeon, Ezeafulukwe Chukwuka Fabian, Chimdi-ejiogu Ngozi and Eluu Emperor Egwu
https://doi.org/10.31248/GJFS2026.117   |   Article Number: 84FAF5733
Smoked fish is highly susceptible to infestation by the hide beetle, Dermestes maculatus, which causes quantitative and qualitative losses during storage. This study evaluated the effect of Piper guineense seed powder on the mortality of Dermestes maculatus and on the proximate composition of smoked Heterobranchus bidorsalis. Smoked fish (250 g per jar) was... Continue here

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