Nutrition–Physiology Interactions in Aquatic Species

A special issue of Hydrobiology (ISSN 2673-9917).

Deadline for manuscript submissions: 30 January 2026 | Viewed by 612

Special Issue Editors

College of Marine Science, South China Agricultural University, Guangzhou, China
Interests: aquatic animal nutrition and feed; fish physiology; lipid metabolism; seafood quality and safety
Special Issues, Collections and Topics in MDPI journals
College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, China
Interests: lipid metabolism; lipid deposition; aquaculture nutrition; fish physiology; metabolic regulation
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

With the rapid expansion of global aquaculture to meet rising aquatic product demands—projected to double by 2050—optimizing aquatic animal nutrition and deciphering fish physiological adaptations have become pivotal for achieving sustainable production. This urgency stems from the sector’s dual role in addressing food security and preserving marine ecosystems. Aquatic organisms face a multitude of challenges, including the dependence of feed formulations on finite marine resources, as well as environmental stressors (e.g., temperature fluctuations, dissolved oxygen levels, and pollutant exposure). Recent advancements in precision nutrition, nutrigenomics, and physiological research have provided novel approaches to tackle these issues. However, the interdisciplinary gap between translating research findings into actionable solutions remains significant. This Special Issue is dedicated to assembling pioneering research and comprehensive reviews that delve into the intricate interplay between fish nutrition and physiological responses. We invite submissions focusing on groundbreaking feed formulations, such as novel protein and lipid sources, functional additives, nutritional metabolism pathways, dynamic interactions with gut microbiota, and adaptive physiological mechanisms in response to environmental or dietary stressors. This collection will serve as a bridge between fundamental science and industry applications, contributing to the sustainable development of aquaculture.

You may choose our Joint Special Issue in Life.

Dr. Dizhi Xie
Dr. Songlin Li
Dr. Kangle Lu
Guest Editors

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Keywords

  • aquatic animal nutrition
  • fish physiology
  • sustainable aquaculture
  • alternative lipid sources
  • alternative protein sources
  • gut&ndash
  • microbiota interactions

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Published Papers (1 paper)

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Research

18 pages, 450 KB  
Article
Evaluation and Economic Analysis of Totally Replacing Soybean Oil with Fish By-Product Oil in Diets for Colossoma macropomum: Effects on Growth, Physiology, and Meat Composition
by Pedro Alves de Oliveira Filho, João Paulo Ferreira Rufino, Paula Ribeiro dos Santos, Ariany Rabello da Silva Liebl, Harison Santos de Oliveira, Diany Bastos Bezerra, Manoel Pio Nonato Neto, Ana Paula Nunes de Sena, Pedro de Queiroz Costa Neto, Jesaías Ismael da Costa, Jackson Pantoja-Lima, Thyssia Bonfim Araújo da Silva and Adriano Teixeira de Oliveira
Hydrobiology 2025, 4(4), 30; https://doi.org/10.3390/hydrobiology4040030 - 6 Nov 2025
Viewed by 282
Abstract
Aquaculture faces challenges in reducing feed costs while promoting sustainable use of by-products. This study aimed to evaluate the effects of totally replacing soybean oil (SBO) with fish by-product oil (FBO) in the diet of Colossoma macropomum, focusing on growth performance, physiological [...] Read more.
Aquaculture faces challenges in reducing feed costs while promoting sustainable use of by-products. This study aimed to evaluate the effects of totally replacing soybean oil (SBO) with fish by-product oil (FBO) in the diet of Colossoma macropomum, focusing on growth performance, physiological and hepatic responses, meat composition, and economic viability. A total of 360 juveniles (9.1 ± 0.59) were distributed in a randomized design with six treatments (0–100% SBO replacement) and six replicates each, and fed to apparent satiation for 91 days. Growth performance did not differ significantly among treatments (p > 0.05), although fish receiving 40% FBO achieved the best feed conversion ratio among treatments. Hematological and biochemical analyses indicated that higher FBO levels (particularly 100%) indicating subtle yet adaptive physiological adjustments, such as moderate modulations in lipid metabolism and erythropoietic activity. Liver weight and hepatosomatic index decreased linearly with increasing FBO levels. In meat composition, FBO inclusion enhanced protein and reduced lipid contents. Although economic indicators were not statistically different (p > 0.05), offered the most favorable trade-off between biological performance and economic efficiency. These findings demonstrate that partial replacement of SBO with FBO, particularly at 40%, represents a sustainable and economically viable alternative for C. macropomum farming. Full article
(This article belongs to the Special Issue Nutrition–Physiology Interactions in Aquatic Species)
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