Fishes

Fishes publishes Special Issues to create collections of papers on specific topics, with the aim of building a community of authors and readers to discuss the latest research and develop new ideas and research directions. Special Issues are led by Guest Editors, who are experts on the topic and all Special Issue submissions follow MDPI's standard editorial process. The journal’s Editor-in-Chief and/or designated Editorial Board Member will oversee Guest Editor appointments and Special Issue proposals, checking their content for relevance and ensuring the suitability of the material for the journal. The papers published in a Special Issue will be collected and displayed on a dedicated page of the journal’s website. Further information on MDPI's Special Issue policies and Guest Editor responsibilities can be found here. For any inquiries related to a Special Issue, please contact the Editorial Office.

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Infectious Diseases and Immune Responses in Aquatic Animals

edited by Shuting Xiong and Pengfei Chu

submission deadline 30 Nov 2026 | Viewed by 51 | Submission Open

Keywords: host– pathogen interactions; innate immunity; adaptive immunity; immune regulation; inflammation; aquatic animal health; infectious diseases

(This special issue belongs to the Section Welfare, Health and Disease)

Freshwater Fishes: Taxonomic Diversity, Conservation Concerns, and Future Directions

edited by Luisa Maria Sarmento-Soares

submission deadline 5 Dec 2026 | 3 articles | Viewed by 3334 | Submission Open

Keywords: taxonomy; conservation genetics; connectivity; freshwater biodiversity; habitat restoration; climate change; population viability; invasive species management; environmental DNA; adaptive management; threat assessment

(This special issue belongs to the Section Biology and Ecology)

Nutritional Immunology and Intestinal Health in Aquatic Animals

edited by

Hui Fei

, Mengmeng Huang and

Shun Yang

submission deadline 15 Dec 2026 | Viewed by 5 | Submission Open

Keywords: nutritional immunology; intestinal health; gut microbiota; functional feed additives; immunostimulant; mucosal immunity; disease resistance; sustainable aquaculture; omics technologies; antibiotic-free

(This special issue belongs to the Section Nutrition and Feeding)

New Conservation Strategies for Freshwater and Marine Fishes: Habitat Is the Key

edited by

Robert L. Vadas, Jr.

submission deadline 20 Dec 2026 | 4 articles | Viewed by 5162 | Submission Open

Keywords: cumulative impacts; habitat diversity; habitat and passage (e.g.; jumping) guilds; biotic indices along anthropogenic gradients; mitigation; fish populations and assemblages

Challenges in Fish Anaesthesia and Analgesia: Welfare, Biochemical Mechanisms, and Toxicological Assessment

edited by

Carlos Alberto e Silva Venâncio

Luís Félix

and

Tânia Martins

submission deadline 20 Dec 2026 | Viewed by 97 | Submission Open

Keywords: anaesthesia; analgesia; animal welfare; biochemical mechanisms; toxicological assessment; pain; stress indicators; fish models

(This special issue belongs to the Section Physiology and Biochemistry)

Impact of Climate Change and Adverse Environments on Aquaculture

edited by

Yiran Hou

Bin Wen

and

Linjun Zhou

submission deadline 25 Dec 2026 | 2 articles | Viewed by 2960 | Submission Open

Keywords: climate change; adverse environments; aquaculture; environmental microbes; environmental pollution; new pollutants

(This special issue belongs to the Section Environment and Climate Change)

Molecular Mechanisms of Gametogenesis in Aquatic Animals

edited by

Yifan Liu

and

Bingjian Liu

submission deadline 25 Dec 2026 | Viewed by 235 | Submission Open

Keywords: gametogenesis; reproductive biology; sex determination; molecular mechanisms; adaptive evolution; aquatic organisms

Advances in the Diagnosis and Prevention of Aquatic Animal Diseases in Aquaculture

edited by Ruijun Li

submission deadline 25 Dec 2026 | 1 articles | Viewed by 161 | Submission Open

Keywords: aquatic animal diseases; sustainable prevention and control; antibiotic replacement; bioactive compound; next-generation vaccines; host-pathogen interaction; biocontrol strategies; emerging epidemics

(This special issue belongs to the Section Welfare, Health and Disease)

Progress in Trout Farming

edited by

Changan Wang

and

Jingzhuang Zhao

submission deadline 25 Dec 2026 | Viewed by 56 | Submission Open

Keywords: trout farming; rainbow trout; aquaculture; fish nutrition; fish health; sustainable aquaculture; breeding and genetics; recirculating aquaculture systems; disease prevention; aquaculture technology

(This special issue belongs to the Section Sustainable Aquaculture)

Epigenetics and Adaptation of Aquatic Animals

edited by Zhe Zheng

submission deadline 25 Dec 2026 | Viewed by 3 | Submission Open

Keywords: aquatic animals; epigenetic mechanisms; adaptation

(This special issue belongs to the Section Genetics and Biotechnology)

Application of Otoliths in Fish Ecology and Fisheries

edited by

Alberto Teodorico Correia

Wann-Nian Tzeng

and

Esteban Avigliano

submission deadline 31 Dec 2026 | 4 articles | Viewed by 2509 | Submission Open

Keywords: fish otoliths; fish biology and ecology; fisheries science; stock structure; population connectivity; migration pathways; aquatic pollution

(This special issue belongs to the Section Biology and Ecology)

Towards Sustainable Aquafeeds: Strategies and Mechanisms of Fish Meal and Oil Replacement

edited by Chang'an Wang

submission deadline 31 Dec 2026 | 2 articles | Viewed by 1373 | Submission Open

Keywords: fish meal replacement; alternative plant proteins; insect meal; single-cell protein; anti-nutritional factors; gut health; flesh quality; nutrient digestibility; functional feed additives; sustainable aquaculture

(This special issue belongs to the Section Nutrition and Feeding)

10th Anniversary of Fishes: Advances in Fish Neuroendocrinology

edited by

José A. Muñoz-Cueto

José Antonio Paullada-Salmeron

and

Bin Wang

submission deadline 31 Dec 2026 | Viewed by 325 | Submission Open

Keywords: fish neuroendocrinology; reproduction; neuropeptides; neurohormones; stress physiology; feeding; circadian rhythms; developmental biology; endocrine disruption; aquaculture; teleosts

(This special issue belongs to the Section Physiology and Biochemistry)

Digestive Physiology of Aquatic Organisms

edited by

Manuel Díaz López

and

Francisca P. Martínez

submission deadline 31 Dec 2026 | Viewed by 120 | Submission Open

Keywords: digestive physiology; aquatic organisms; alternative ingredients; intestinal health; bioactive compounds; in vitro models; in silico models

(This special issue belongs to the Section Physiology and Biochemistry)

Physiological Adaptations of Fish to Hypoxia

edited by

Weijie Mu

submission deadline 31 Dec 2026 | Viewed by 95 | Submission Open

Keywords: hypoxia tolerance; oxygen sensing; gill remodeling; metabolic suppression; hemoglobin affinity; hypoxia-inducible factor (HIF); anaerobic metabolism; aquatic surface respiration; cardiorespiratory adaptation; fish physiology

(This special issue belongs to the Section Physiology and Biochemistry)

Toxicology of Anthropogenic Pollutants in Fish—2nd Edition

edited by

Zhongdian Dong

submission deadline 31 Dec 2026 | Viewed by 55 | Submission Open

Keywords: anthropogenic pollutants; fish toxicology; aquatic ecosystems; emerging contaminants; organic pollutants; endocrine disruptors; antibiotics and pharmaceuticals; microplastics and nanoplastics; trace metals; pollutant mixtures; bioaccumulation; ecological risk assessment; environmental monitoring

(This special issue belongs to the Section Environment and Climate Change)

Genomic Selection, Genome-Wide Association and Omics in Aquaculture

edited by

Weiwei Zheng

and

Yangzhen Li

submission deadline 31 Dec 2026 | Viewed by 40 | Submission Open

Keywords: genomic selection; genome-wide association; multi-omics integration; genomics; transcriptomics; metabolomics; stress adaptation; genetic breeding; economic and biological traits; aquaculture

(This special issue belongs to the Section Genetics and Biotechnology)

Adaptive Fisheries Management in East Asia: Navigating Climate Change, POPs, and Microplastics

edited by

Min Xu

, Haitao Wang,