Journal of fish diseases

01 20 October 2026

DOI 10.1111/jfd.70303

Organ Wet Mount (Squash) Preparations in Fish Pathology: An Underused, Rapid and Low‐Cost Tool for Tissue‐Level Diagnosis During Necropsy

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Komsin Sahatrakul, Imogen L. Payne, Daniela Denk

Rapid, practical diagnostic approaches are essential for effective fish health management, yet cytological wet mount assessment of internal organs remains underused and inconsistently described in peer‐reviewed aquatic veterinary literat...

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02 19 October 2026

DOI 10.1111/jfd.70312

Selective Systemic Responses During Aeromonas salmonicida Subsp. Salmonicida Infection in Northern Snakehead ( Channa argus )

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Ishani Bhgaya Vidana Pallaththarage, Su‐Mi Shin, Bhashini Prasadika Waidyarathna et al.

Northern snakehead ( Channa argus ) is a bimodal air‐breathing fish in which erythrocyte‐associated parameters remain relatively stable during physiological challenges such as aerial exposure. However, whether this characteristic is main...

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03 15 October 2026

DOI 10.1111/jfd.70304

Infectious Pancreatic Necrosis in Atlantic Cod ( Gadus morhua ): Complete Viral Genome Characterization From the First Norwegian Field Case Suggests Cross‐Species Transmission

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Anne Berit Olsen, Frieda Betty Ploss, Tore Grøtting et al.

We describe the first natural outbreak of infectious pancreatic necrosis (IPN) in farmed Atlantic cod ( Gadus morhua ) in Norway. IPN was originally described in young salmonids, but the greatest losses have historically occurred in Atla...

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04 14 October 2026

DOI 10.1111/jfd.70305

Molecular Screening and Cell Cultured–Based Isolation of Carp Edema Virus in Koi Carp ( Cyprinus carpio Koi) From Aquarium Shops in Tamil Nadu, India

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Gani Taju, Seepoo Abdul Majeed, Siva Divyalakshmi et al.

This study aimed to explore the widespread occurrence of carp edema virus (CEV) in ornamental koi carp available at ornamental shops in Kolathur, Tamil Nadu. The affected koi carps showed various symptoms, such as ulcers, loss of scales,...

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05 12 October 2026

DOI 10.1111/jfd.70302

Efficacy of Ccombody as an Immunoprophylaxis Strategy: Impact on Immune Gene Expression of Pacific White Shrimp ( Penaeus vannamei ) Against Acute Hepatopancreatic Necrosis Disease ( AHPND )

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Prawporn Thaijongrak, Kasemsuk Kitisriworapun, Theerapat Damrongsakul et al.

Acute hepatopancreatic necrosis disease (AHPND) is caused by a plasmid bearing strain of Vibrio parahaemolyticus ( Vp AHPND ), which produces PirA and PirB toxins that specifically target and damage hepatopancreatic and epithelial cells ...

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06 10 October 2026

DOI 10.1111/jfd.70300

Brequinar Exerts Antiviral Effects Against Aquareovirus via Host Pyrimidine Metabolism Modulation

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Linyi Liu, Weijun Wu, Sen Han et al.

Grass carp reovirus (GCRV) causes hemorrhagic disease in aquaculture, necessitating novel antivirals. Host‐targeted broad‐spectrum agents represent a promising approach. We evaluated Brequinar, a dihydroorotate dehydrogenase (DHODH) inhi...

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07 8 October 2026

DOI 10.1111/jfd.70298

First Report of Natural Co‐Infection by Gyrodactylus lenoki and Lactococcus garvieae in Farmed Rainbow Trout ( Oncorhynchus mykiss ): Field and Experimental Evidence for Parasite‐Enhanced Mortality, With a COI –Morphology Species Discordance

Open DOI

Truong Dinh Hoai, Nguyen Duy Trieu, Doan Thi Nhinh et al.

It is well established that ectoparasite infection can increase the pathogenicity of, and host susceptibility to, bacterial infections in fish, including rainbow trout; however, no interaction between the ectoparasite Gyrodactylus and th...

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08 7 October 2026

DOI 10.1111/jfd.70299

Pathogenicity Analysis of Co‐Infection by Vibrio anguillarum and Rahnella aquatilis Causing Ulcerative Fin Disease in Tawny Puffer ( Takifugu flavidus ): Pathogen Isolation, Histopathology and Apoptosis Analysis

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Chenxiao Xi, Ziquan Wang, Guodong Zhang et al.

Takifugu flavidus has high edible and medicinal value, and it is one of the pufferfish with high price and good quality in the market. With the expansion of pufferfish farming, the economic losses caused by bacterial diseases are becomin...

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09 7 October 2026

DOI 10.1111/jfd.70301

Review of Salmonid Alphavirus: Focus on Viral Survival, Shedding, Detection and Effects of Vaccination

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Hamish Rodger, Elisabeth Midtbø Vik, Fredrikke Nyborg Formo et al.

This review of salmonid alphavirus provides a collection of the most recent knowledge on the factors relevant for the transmission and control of the virus including updates on SAV survival, viral shedding, detection, and effects of vacc...

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10 1 October 2026

DOI 10.1111/jfd.70293

Issue Information

Open DOI