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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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The Impacts of Climate Change on the Structure of Fish Communities

edited by

Yongjiu Xu

and Rijin Jiang

submission deadline 15 Aug 2026 | Viewed by 233 | Submission Open

Keywords: fisheries community dynamics; fisheries ecology; stock assessment; fisheries oceanography; AI with fisheries stock and oceanography

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

Immunity in Teleost Fishes: From Pattern Recognition to Protective Responses

edited by

Xiaowen Xu

and

Yunkun Li

submission deadline 15 Aug 2026 | Viewed by 224 | Submission Open

Keywords: teleost fishes; interferon expression; antiviral immune response; antibacterial immune response; pattern recognition receptors; immune signaling transduction; comparative immunology; fish health; disease resistance

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

Advances in Pathology of Aquatic Animals

edited by Maria Cristina Chávez-Sánchez

submission deadline 20 Aug 2026 | 5 articles | Viewed by 6072 | Submission Open

Keywords: disease responses to nutritional and environmental stress (pollution and climate change); host– pathogen interactions and novel treatments; genomic approaches to infectious diseases; host– microbiota and immune responses; emerging technologies in fish farming health and welfare (diagnostic; prevention; biosensors; AI; etc.); functional supplements/additives in aquatic animal health

(This special issue belongs to the Section Fish Pathology and Parasitology)

Technology for Fish and Fishery Monitoring—2nd Edition

edited by Vincent Kerzérho

submission deadline 20 Aug 2026 | 2 articles | Viewed by 1079 | Submission Open

Keywords: fisheries; biologging; physiologging; biotelemetry; monitoring; tracking; sensors; embedded systems; electronic tags; machine learning; artificial intelligence (AI); AUV; ROV

(This special issue belongs to the Section Fishery Facilities, Equipment, and Information Technology)

Applications of Hydroacoustic Technology to Marine Ecology and Fisheries

edited by Xiaoqin Zang and Leif Rasmuson

submission deadline 25 Aug 2026 | 1 articles | Viewed by 840 | Submission Open

Keywords: hydroacoustic technology; aquatic ecology; acoustic telemetry; passive acoustic monitoring; fish passage; hydropower; offshore wind; marine hydrokinetic energy; acoustic surveys

Innovations and Sustainability in Aquaculture Production and Processing

edited by

Carmen Georgeta Nicolae

Victor Niţă

and

Magda Nenciu

submission deadline 31 Aug 2026 | 1 articles | Viewed by 1343 | Submission Open

Keywords: sustainable aquaculture; aquaculture innovations; eco-efficient farming; integrated multitrophic aquaculture (IMTA); sustainable feed; post-harvest processing; waste valorization; aquaculture biotechnology; environmental impact mitigation; circular economy in aquaculture

(This special issue belongs to the Section Sustainable Aquaculture)

Aquaculture Feeds and Feed Additives—Toward Precise and Sustainable Nutrition

edited by

Wilson Massamitu Furuya

, Thais Pereira Da Cruz, Lilian Carolina Rosa Da Silva, Leandro Portz and

Álvaro José De Almeida Bicudo

submission deadline 31 Aug 2026 | 2 articles | Viewed by 604 | Submission Open

Keywords: precision nutrition; functional feed additives; dustainable aquafeeds; nutrient metabolism; alternative protein sources; gut microbiome modulation; feed efficiency; immunonutrition; digestive physiology

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

Freshwater Mussel Biodiversity and Conservation

edited by

Mafalda Gama

submission deadline 31 Aug 2026 | Viewed by 222 | Submission Open

Keywords: freshwater mussel biodiversity; conservation biology; population monitoring; climate change impacts; invasive species; restoration and management; ecosystem services; habitat degradation; conservation genomics

(This special issue belongs to the Section Aquatic Invertebrates)

Effects of Dietary Ingredients on Fish Nutrition and Health

edited by

Jorge Palma

submission deadline 1 Sep 2026 | 4 articles | Viewed by 2866 | Submission Open

Keywords: fish nutrition; functional feeds; alternative protein sources; alternative nutritional sources; gut microbiota; immune function; nutrient bioavailability; feed efficiency; fish health; sustainable aquaculture

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

The Impact of Contamination on Fishes

edited by

Zrinka Dragun

Tatjana Mijošek Pavin

and

Dušica Ivanković

submission deadline 5 Sep 2026 | 4 articles | Viewed by 3445 | Submission Open

Keywords: bioaccumulation; biomarkers; eDNA; freshwater; histopathology; marine; metallomics; metals/metalloids; microplastics; organic contaminants

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

Ecotoxicology Studies on Pollutants Induced Toxicity in Fish

edited by Carmen González-Fernández

submission deadline 6 Sep 2026 | Viewed by 184 | Submission Open

Keywords: fish; pollutants; bioindicators; stress; non-invasive methods; NAMs

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

Genetics and Breeding of Fishes

edited by Wuhui Li

submission deadline 10 Sep 2026 | 5 articles | Viewed by 4604 | Submission Open

Keywords: fish breeding techniques; reproduction; genetics and genomics; sustainable aquaculture

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

Feature Papers by Fishes’ Editorial Board Members

edited by

Maria Angeles Esteban

submission deadline 10 Sep 2026 | 1 articles | Viewed by 2193 | Submission Open

Keywords: aquatic biodiversity; climate change’ s impacts; pollution; antimicrobial resistance; sustainable aquaculture; genetic improvement; ecosystem-based management; blue biotechnology; fish welfare; seafood traceability

Immunology, Environment, and Nutrition of Aquatic Animals

edited by

Quanquan Cao

submission deadline 10 Sep 2026 | 1 articles | Viewed by 1509 | Submission Open

Keywords: immunology; environment; nutrition; aquatic animals; signal regulation

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

Plastics in Fish and Shellfish

edited by Numair Masud and

Jo Cable

submission deadline 10 Sep 2026 | 1 articles | Viewed by 556 | Submission Open

Keywords: microplastics; nanoplastics; polymer additives; chemical sorption; aquatic toxicology; fish; shellfish; aquaculture; environmental monitoring; food safety

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

Refinement of Sustainable Aquaculture Systems and Techniques

edited by

Fábio Aremil Costa Dos Santos

and

Ronald Kennedy Luz

submission deadline 10 Sep 2026 | Viewed by 328 | Submission Open

Keywords: recirculating aquaculture systems; fish nutrition; phytogenic feed additives; essential oils; intestinal microbiota; physiological stress; hematological biomarkers; reproductive performance; growth efficiency; disease resistance

(This special issue belongs to the Section Sustainable Aquaculture)

Aquatic Invasions in a Changing World: From Ecological Impacts to System Transformation

edited by

Rodolphe Elie Gozlan

submission deadline 13 Sep 2026 | Viewed by 220 | Submission Open

Keywords: aquatic biological invasions; global environmental change; climate extremes; ecosystem functioning; environmental DNA (eDNA); novel ecosystems; one health

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

Toxic Effects of Microplastics on Aquatic Animals

edited by

Nina Marn

and

Vlatka Filipović Marijić

submission deadline 15 Sep 2026 | Viewed by 241 | Submission Open

Keywords: microplastics; aquatic animals; ecotoxicology; food web dynamics; biodiversity impacts; environmental risk assessment

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

Biotechnology Innovations in Aquaculture

edited by Nivaldo Ferreira do Nascimento,

Diógenes Henrique De Siqueira-Silva

and

Matheus Pereira-Santos

submission deadline 15 Sep 2026 | Viewed by 177 | Submission Open

Keywords: chromosome manipulation; cryopreservation; fish reproduction; functional genomics; germ cell transplantation; nutrition; health management; sex control; sustainable aquaculture; germ cell manipulation

(This special issue belongs to the Section Sustainable Aquaculture)

Advances in Carp: Genetic Improvement and Biotechnology

edited by

Jun Jiang

Xuan Xie

and Kaiqi Lian

submission deadline 20 Sep 2026 | 2 articles | Viewed by 2784 | Submission Open

Keywords: carp; genome mining; gene function; genetic breeding; gene editing; xenotransplantation; germplasm preservation; spermatogenesis; disease diagnosis and control

Advances in Shrimp Physiology and Genomics

edited by

Zhongkai Wang

and Yuquan Li

submission deadline 20 Sep 2026 | 1 articles | Viewed by 1185 | Submission Open

Keywords: crustaceans; shrimp; aquaculture; physiology; genomics; genetics; transcriptomics; proteomics; metabolomics

(This special issue belongs to the Section Aquatic Invertebrates)

Nutritional Physiology and Environmental Toxicology of Aquatic Animals

edited by Yuhong Yang, Shengqiang Tao and Xianyong Bu

submission deadline 20 Sep 2026 | Viewed by 194 | Submission Open

Keywords: nutrition; stress; physiology; toxicology; aquatic animal

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

Advances in Acoustic Monitoring of Aquatic Animals: From Classical Methods to AI-Enabled Solutions

edited by

Chi-Fang Chen

and Shashidhar Siddagangaiah

submission deadline 27 Sep 2026 | Viewed by 179 | Submission Open

Keywords: passive acoustics (PAM); active acoustics; echo-classification target strength analysis; bioacoustics; soundscape ecology; machine learning; deep learning; automated detection; localization and tracking

(This special issue belongs to the Section Fishery Facilities, Equipment, and Information Technology)

Endocrine Regulation of Growth and Reproduction in Fish

edited by

Rafael Nóbrega

Maeli Dal-Pai-Silva

and

Bruno Oliveira Da Silva Duran

submission deadline 5 Oct 2026 | Viewed by 186 | Submission Open

Keywords: somatic growth; reproduction; fish; aquaculture; fisheries management

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

Advances in the Application of Microalgae in Aquaculture

edited by Yihong Zheng and

Wujie Xu

submission deadline 10 Oct 2026 | 1 articles | Viewed by 1160 | Submission Open

Keywords: microalgae; sustainable aquaculture; aquafeed; fish nutrition; omega-3 fatty acids; protein alternatives; bioactive compounds; aquatic animal health; feed technology; sustainability

(This special issue belongs to the Section Sustainable Aquaculture)

Migration and Movement Ecology of Freshwater Fishes

edited by

Joaquim José Barreira de Jesus

submission deadline 10 Oct 2026 | Viewed by 227 | Submission Open

Keywords: freshwater fish migration; reproductive migrations; movement ecology; river connectivity; conservation and management

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

Aquaculture Omics: Current Status and Future Perspectives

edited by

Konstantinos Gkagkavouzis

submission deadline 15 Oct 2026 | Viewed by 136 | Submission Open

Keywords: aquaculture omics; genomics; transcriptomics; proteomics; metabolomics; epigenomics; sustainable aquaculture; disease resistance; genomic selection; climate resilience

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

Digestive Physiology in Aquatic Animals: Capacities for Ingestion, Digestion, and Absorption

edited by Héctor G. Nolasco-Soria

submission deadline 15 Oct 2026 | Viewed by 136 | Submission Open

Keywords: aquatic organisms digestive physiology; ingestion capacity; digestive physiological ions and bile; digestive capacity; in vitro and in vivo digestibility; absorption capacity; food transit rates

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

Stress Ecology of Aquatic Animals

edited by

Albena Alexandrova

and Nesho H. Chipev

submission deadline 20 Oct 2026 | 2 articles | Viewed by 1081 | Submission Open

Keywords: adaptation and resilience; aquatic pollution; climate change impacts; environmental stressors; marine ecophysiology; multi-stressor interactions

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

Ecohydrology and River Connectivity: Implications for Fish Conservation

edited by

Xiaogang Wang

, Yiqun Hou and

Tao He

submission deadline 20 Oct 2026 | 1 articles | Viewed by 547 | Submission Open

Keywords: fish passage; river connectivity; ecohydrology; fish behavior; fish habitat; fish passage monitoring and evaluation; fish passage hydraulics; fish toxicology; fish resources conservation; river and lake ecosystem health

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

Recent Studies on Pathogen-Host Interaction of Aquatic Animals

edited by Yaoyao Zhan,

Pengfei Zou

and Yucong Huang

submission deadline 20 Oct 2026 | 1 articles | Viewed by 132 | Submission Open

Keywords: pathogen; aquatic organisms; host-pathogen interaction; symptoms and responses; molecular regulation (interaction) network; pathogenesis mechanism; disease control and prevention

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

Vantage Points in the Morphology of Aquatic Organisms

edited by Peter S. Johnston

submission deadline 31 Oct 2026 | 3 articles | Viewed by 3021 | Submission Open

Keywords: morphology; palaeontology; aquatic; vertebrate; invertebrate; fish; cetacean

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

Advances in Integrated Rice-Fish Farming

edited by Zongjun Du and Dongjie Wang

submission deadline 31 Oct 2026 | 1 articles | Viewed by 945 | Submission Open

Keywords: rice– fish co-culture system; integrated aquaculture; nutrient cycling; microbial community dynamics; heavy metal accumulation; microplastic accumulation; climate-resilient farming; sustainable agriculture

(This special issue belongs to the Section Sustainable Aquaculture)

Welfare and Stressor in Aquaculture: Mechanisms, Management, and Sustainable Solutions

edited by

Kai Zhang

and Guangjun Wang

submission deadline 31 Oct 2026 | 2 articles | Viewed by 758 | Submission Open

Keywords: aquatic animal welfare; sustainable aquaculture; physiological and behavioral responses; smart aquaculture technologies

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

Feed Additives in Fish and Shellfish Farming

edited by

Yaopeng Lu

and Ping Wu

submission deadline 31 Oct 2026 | Viewed by 309 | Submission Open

Keywords: aquatic animal nutrition; feed additive; immunity; nutritional physiology; disease resistance

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

Genetic Foundations of Disease Resistance in Fishes

edited by

Yunji Xiu

submission deadline 31 Oct 2026 | Viewed by 89 | Submission Open

Keywords: disease resistance; fish genetics; QTL; GWAS; immune genetics; genomic selection; aquaculture breeding

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

Physiological and Behavioral Studies in Aquaculture

edited by

Zhishuai Hou

submission deadline 10 Nov 2026 | 3 articles | Viewed by 1718 | Submission Open

Keywords: aquaculture; physiology; behavior; stress response; metabolism; neuroendocrine regulation; nutrition; welfare; environmental adaptation; sustainable aquaculture

Sustainable Aquaculture and Seafood Production

edited by

Ewen Mclean

submission deadline 10 Nov 2026 | 1 articles | Viewed by 1713 | Submission Open

Keywords: governance; economic viability; climate change; social well-being; environmental impact; feed ingredients; animal health and welfare; engineering; product quality; automation

Evolutionary Biology of Aquatic Animals

edited by

and

submission deadline 10 Nov 2026 | 2 articles | Viewed by 1240 | Submission Open

Keywords: marine organism; population genetics; biological diversity; adaptative evolution; conservation genetics; phylogeny

(This special issue belongs to the Section Taxonomy, Evolution, and Biogeography)

Use of Essential Oils in Aquaculture

edited by

Ronald Kennedy Luz

and

Bernardo Baldisserotto

submission deadline 20 Nov 2026 | 5 articles | Viewed by 7543 | Submission Open

Keywords: welfare; safe management; transportation; growth; anesthetic; stress

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

Germplasm Resources and Genetic Breeding of Aquatic Animals

edited by

Yang Liu

and

Yongsheng Tian

submission deadline 20 Nov 2026 | 4 articles | Viewed by 4844 | Submission Open

Keywords: germplasm preservation and utilization; genome evolution; omics analysis; economic traits; functional gene; mitochondrial genome; microsatellite; growth and development

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

Stress Responses in Fish

edited by

Ali Reza Khansari

and

Lluís Tort

submission deadline 20 Nov 2026 | 2 articles | Viewed by 1623 | Submission Open

Keywords: fish; physiology; stress; HPI axis; cortisol

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

Green Sustainable Aquaculture and Environmental Control

edited by Guangjun Wang,

Xiangli Tian

, Kai Zhang and

Jie Wang

submission deadline 20 Nov 2026 | 1 articles | Viewed by 1045 | Submission Open

Keywords: sustainable aquaculture; environment regulation; environment restoration

(This special issue belongs to the Section Sustainable Aquaculture)

Salmon Aquaculture

edited by Jose Luis Muñoz and

Luis Vargas-Chacoff

submission deadline 20 Nov 2026 | Viewed by 149 | Submission Open

Keywords: salmon physiology; salmon health; salmon stress and welfare; climate change and salmon farming; technological innovation and sustainability; salmon aquaculture

(This special issue belongs to the Section Sustainable Aquaculture)

Ecology of Fish: Age, Growth, Reproduction and Feeding Habits

edited by

André Martins Vaz-Dos-Santos

and

Estevan Luiz da Silveira

submission deadline 30 Nov 2026 | 8 articles | Viewed by 7479 | Submission Open

Keywords: age; growth; reproductive ecology; feeding ecology; population dynamics

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

Advances in Shellfish Aquaculture

edited by

Yuanzi Huo

and Emily Kunselman

submission deadline 30 Nov 2026 | 5 articles | Viewed by 3971 | Submission Open

Keywords: shellfish aquaculture; disease management; shellfish genomics; sustainable production; nutritional physiology; biosecurity; environmental impact; hatchery technology; aquaculture policy; integrated multi-trophic aquaculture (IMTA)

(This special issue belongs to the Section Sustainable Aquaculture)

Nutritional Modulation of Brain Function and Behavior in Aquatic Animals

edited by

Helen Miliou

and

Aristeidis Tsopelakos

submission deadline 30 Nov 2026 | 1 articles | Viewed by 822 | Submission Open

Keywords: fatty acids; n-3 LC-PUFA; fish nutrition; neurotransmitters; brain physiology; stress response; fish welfare; sustainable aquafeeds; alternative lipids; valorization of discards

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

Enforcement and Compliance in Fisheries

edited by Geir Hønneland

submission deadline 30 Nov 2026 | Viewed by 359 | Submission Open

Keywords: compliance; enforcement; IUU fishing; fisheries management; law of the sea; ocean governance; blue crime

(This special issue belongs to the Section Fishery Economics, Policy, and Management)

Molecular Research on Immunological Responses in Aquatic Animals

edited by

Fang Han

submission deadline 30 Nov 2026 | 1 articles | Viewed by 271 | Submission Open

Keywords: immunological responses; molecular immunity; immune signaling pathway; host– pathogen interaction; mucosal immunity; immune regulation; disease resistance

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

Integrated Strategies for Shark Conservation: Bridging Fisheries Science, Ecology, and Adaptive Management

edited by Jorge Homero Rodrígez-Castro and José Alberto Ramírez de León

submission deadline 30 Nov 2026 | Viewed by 192 | Submission Open

Keywords: shark conservation; population assessment; marine protected areas; bycatch and mitigation; climate change and distribution; connectivity and genetics; ecosystem approach to fisheries; adaptive management and governance; telemetry and novel technologies; data limited fisheries

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

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