Emerging Diseases in Aquatic Animals

A special issue of Microorganisms (ISSN 2076-2607). This special issue belongs to the section "Veterinary Microbiology".

Deadline for manuscript submissions: 30 September 2025 | Viewed by 1166

Special Issue Editors


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Guest Editor
Institute of Marine Sciences, Shantou University, Shantou 515063, China
Interests: aquaculture; diseases; gut microbiota; immune responses; probiotics

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Guest Editor Assistant
Aquaculture Pathology Laboratory, School of Animal & Comparative Biomedical Sciences, The University of Arizona, Tucson, AZ 85721, USA
Interests: aquatic animal health; aquatic animal disease; pathogen characterization; pathology; histopathology

Special Issue Information

Dear Colleagues,

The emergence of new diseases in aquatic animals poses significant challenges to aquaculture and its sustainability. These diseases, driven by factors such as environmental changes, intensified aquaculture practices, and the transboundary movement of aquatic organisms, threaten the health and stability of aquatic populations. This Special Issue aims to address these challenges by inviting contributions focused on the emergence, detection, and management of novel diseases in fish, shellfish, and other aquatic organisms.

We particularly encourage studies that investigate the drivers of disease emergence, pathogen characterization, host–pathogen interactions, and the development of innovative diagnostic tools and intervention strategies. Research exploring the impact of antimicrobial resistance and the effectiveness of biosecurity measures on disease incidence and control is also highly valued. This Special Issue seeks to provide an overview of pressing issues in aquatic animal health. Submissions are invited in the form of original research articles presenting novel findings in pathology and disease control, review articles summarizing recent advancements, case studies highlighting unique or emerging disease outbreaks, methodological papers detailing innovative diagnostic or therapeutic techniques, and short communications reporting urgent and significant findings.

Dr. Tran Ngoc Tuan
Guest Editor

Dr. Nguyen Dinh-Hung
Guest Editor Assistant

Manuscript Submission Information

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Keywords

  • emerging diseases
  • aquatic animal health
  • novel pathogens
  • disease outbreaks
  • diagnostic innovation

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Published Papers (1 paper)

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Review

30 pages, 1100 KiB  
Review
Antibiotic Abuse in Ornamental Fish: An Overlooked Reservoir for Antibiotic Resistance
by Chun Au-Yeung, Yat-Lai Tsui, Man-Hay Choi, Ka-Wai Chan, Sze-Nga Wong, Yuk-Ki Ling, Cheuk-Ming Lam, Kit-Ling Lam and Wing-Yin Mo
Microorganisms 2025, 13(4), 937; https://doi.org/10.3390/microorganisms13040937 - 18 Apr 2025
Viewed by 165
Abstract
Ornamental fish represent a significant aquaculture sector with notable economic value, yet their contribution to antibiotic residues and resistance remains underrecognized. This review synthesizes evidence on widespread and often unregulated antibiotic use—including tetracyclines and fluoroquinolones—in ornamental fish production, transportation, and retail, primarily targeting [...] Read more.
Ornamental fish represent a significant aquaculture sector with notable economic value, yet their contribution to antibiotic residues and resistance remains underrecognized. This review synthesizes evidence on widespread and often unregulated antibiotic use—including tetracyclines and fluoroquinolones—in ornamental fish production, transportation, and retail, primarily targeting bacterial diseases such as aeromonosis and vibriosis. Pathogenic microorganisms including Edwardsiella, Flavobacterium, and Shewanella spp. cause diseases like hemorrhagic septicemia, fin rot, skin ulcers, and exophthalmia, impairing fish health and marketability. Prophylactic and therapeutic antibiotic applications elevate antibiotic residues in fish tissues and carriage water, thereby selecting for antibiotic-resistant bacteria (ARB) and antibiotic resistance genes (ARGs). These resistant elements pose significant risks to fish health, human exposure via direct contact and bioaerosols, and environmental health through contamination pathways. We emphasize the urgent need for a holistic One Health approach, involving enhanced surveillance, stringent regulatory oversight, and adoption of alternative antimicrobial strategies, such as probiotics and advanced water treatments. Coordinated global actions are crucial to effectively mitigate antibiotic resistance within the ornamental fish industry, ensuring sustainable production, safeguarding public health, and protecting environmental integrity. Full article
(This article belongs to the Special Issue Emerging Diseases in Aquatic Animals)
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