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Fishes
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Fish Farming in Recirculating Aquaculture Systems
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Fish Farming in Recirculating Aquaculture Systems

A special issue of Fishes (ISSN 2410-3888). This special issue belongs to the section "Sustainable Aquaculture".

Deadline for manuscript submissions: 15 May 2026 | Viewed by 6542

Special Issue Editors

Prof. Dr. Baoliang Liu

E-Mail Website
Guest Editor
Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266000, China
Interests: recirculating aquaculture system; aquaculture welfare; aquaculture breeding environment
Dr. Wenyang Li

E-Mail Website
Guest Editor Assistant
Yellow Sea Fisheries Research Institute of Chinese Academy of Fishery Sciences, Qingdao 266000, China
Interests: animal welfare of fish farming in recirculating aquaculture

Special Issue Information

Dear Colleagues,

The rapid growth in modern aquaculture reflects people's increasing demands for seafood. As the global population and consumption of aquatic food increase, innovative production systems are needed. Recirculating Aquaculture Systems (RASs) have many advantages over others, such as high yield and efficiency, water conservation, environmental protection, strong system controllability, and high product quality. It can provide a suitable, stable, and controllable environment for rearing aquatic animals, and is one of the important development directions in the modern aquaculture industry.

Improvements in RASs may contribute to achieving sustainable aquaculture, and understanding RASs and applying this knowledge to the latest RAS technology is crucial. Since the 1960s, research in the above-mentioned fields has made rapid progress in many aspects; therefore, it is necessary to integrate the latest information on the development of aquaculture.

This Special Issue aims to provide the latest information on fish farming in RASs to develop the technology and basic theory of RASs. Submissions may take the form of original research, full or mini-reviews, and perspectives on topics including, but not limited to, the following:

  • Recirculating aquaculture;
  • The regulatory function of mechanical factors in RAS;
  • The interaction between the RAS and the environment;
  • Analysis of the inherent species potential for culturing in RAS;
  • New technologies for RAS;
  • Welfare of the animals reared in RAS;
  • Development of urban aquaculture using RAS.

Prof. Dr. Baoliang Liu
Guest Editor

Dr. Wenyang Li
Guest Editor Assistant

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 250 words) can be sent to the Editorial Office for assessment.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Fishes is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • recirculating aquaculture system
  • indoor aquaculture
  • zero water exchange aquaculture
  • aquaculture environment

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Published Papers (3 papers)

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Research

21 pages, 2439 KB  
Article
Dynamics of Solid Waste, Water Quality and Associated Microbial Community in a Recirculating Aquaculture System for Mandarin Fish (Siniperca chuatsi)
by Chengyu Jiang, Jinliang Zhao, Huanchao Ma, Zhaoyuan Luo, Qianwen Yao and Minglin Wu
Fishes 2026, 11(3), 135; https://doi.org/10.3390/fishes11030135 - 26 Feb 2026
Viewed by 457
Abstract
This study investigated the temporal variation and removal efficiency of solid waste, together with the dynamics of water quality parameters and microbial community structure, in a recirculating aquaculture system (RAS) for mandarin fish (Siniperca chuatsi) fed a formulated diet. The average [...] Read more.
This study investigated the temporal variation and removal efficiency of solid waste, together with the dynamics of water quality parameters and microbial community structure, in a recirculating aquaculture system (RAS) for mandarin fish (Siniperca chuatsi) fed a formulated diet. The average fish weight was 384.62 ± 12.13 g, and the stocking density was 25 kg/m3. The results showed that: (1) the contents of the stomach and intestine exhibited a bimodal pattern, characterized by an initial increase followed by a decrease, and a subsequent secondary increase and decline. In the culture tanks, the total suspended solid (TSS) concentration at the main discharge outlet of the dual-channel bottom drainage system was highest immediately after feeding (0 h), reached its lowest level at 5 h post-feeding, and displayed a double-peak pattern during the 6–24 h post-feeding period. The temporal variations of in-tank TSS and chemical oxygen demand (COD) generally followed the same trend as the TSS concentration at the main discharge outlet. (2) Total ammonia nitrogen (TAN) reached its maximum at 6 h, whereas nitrite nitrogen (NO2−-N) peaked at 9 h. (3) The solid–liquid separation efficiencies of the dual-drain system, vertical flow clarifier, and Rotating drum microfilter were 30.40–58.33%, 51.30–76.61%, and 37.04–68.26%, respectively, with the highest removal efficiencies observed at 0 h post-feeding. (4) In the nitrifying biofilter, the TAN concentrations ranged from 0.22–0.99 mg/L at the inlet to 0.15–0.36 mg/L at the outlet. In contrast, NO2−-N concentrations exhibited negligible differences between the inlet and outlet at the corresponding sampling times. At the phylum level, Pseudomonadota, Bacteroidota, and the superphylum Patescibacteria dominated the biofilter microbial communities. At the genus level, Sediminibacterium and Limnohabitans were predominant in BF_1, whereas taxa affiliated with norank_f__Hyphomicrobiales_ and unclassified_o__Saccharimonadales dominated BF_2. Overall, the results indicated that increasing water circulation and tank flow rate at 0 h and during the 7–14 h post-feeding period may facilitate the timely removal of solid waste, and that the installation of a foam fractionator could contribute to the removal of dissolved and fine organic matter. Full article
(This article belongs to the Special Issue Fish Farming in Recirculating Aquaculture Systems)
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13 pages, 1015 KB  
Article
Effect of Feeding Frequency and Restriction on the Growth Performance, Physiology, and Intestinal Histomorphometry of Colossoma macropomum in a Recirculating Aquaculture System
by Yhago Patrycky Antunes Souza Assis, Matheus Philip Santos Amorim, Lívia de Assis Porto, Paulo Edson Camilo Mol de Oliveira, Carina Alves Santos, Gean Paulo Andrade Reis, Ronald Kennedy Luz and Gisele Cristina Favero
Fishes 2025, 10(4), 148; https://doi.org/10.3390/fishes10040148 - 26 Mar 2025
Cited by 1 | Viewed by 2650
Abstract
This study investigated the growth performance and physiological and intestinal histomorphometry of juvenile tambaqui Colossoma macropomum (51.68 ± 3.87 g), fed continuously or subjected to weekly cycles of feed restriction (one day of no feeding followed by six days of feeding) associated with [...] Read more.
This study investigated the growth performance and physiological and intestinal histomorphometry of juvenile tambaqui Colossoma macropomum (51.68 ± 3.87 g), fed continuously or subjected to weekly cycles of feed restriction (one day of no feeding followed by six days of feeding) associated with feeding frequencies of two or three times a day, for 84 days, in a recirculating aquaculture system (RAS). Growth performance and blood parameters were determined after 42 and 84 days. Liver, adipose tissue and intestine were collected after 84 days to determine the somatic indices, liver lipid levels and intestinal histomorphometry. Restricted fish had greater feed intake compared to continuously fed after 42 days, as well as greater specific growth rate (SGR) and better feed conversion between 43 and 84 days. No significant differences were observed for restriction, feeding frequency or the interaction for blood parameters after 42 and 84 days, somatic indices and liver lipid levels after 84 days, with the exception of plasma glucose, which was higher for restricted fish after 84 days. The feed restriction promoted a greater intestinal villi perimeter and height compared to continuously fed fish, as did fish fed twice a day compared to those fed three times a day, with an interaction between factors. We concluded that six days of feeding per week and twice-daily feeding frequency can be used as a feeding protocol for tambaqui juveniles over an 84-day period in RAS and this management protocol can also help reduce feed and labor costs in the production of this species. Full article
(This article belongs to the Special Issue Fish Farming in Recirculating Aquaculture Systems)
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17 pages, 931 KB  
Article
Effect of Photoperiod on Nutritional Quality of Muscle and Lipid Metabolism of Litopenaeus vannamei
by Yingying Fang, Fan Fei, Fulu Guo, Chengliang Zhu, Xiaoqiang Gao, Wenyang Li, Hongjun Yang, Yan Sun, Chuanxin Zhang and Baoliang Liu
Fishes 2024, 9(12), 508; https://doi.org/10.3390/fishes9120508 - 12 Dec 2024
Cited by 2 | Viewed by 2382
Abstract
Photoperiod serves as a significant environmental signal for organisms and plays a critical role in regulating their metabolic processes. This research aimed to investigate the lipid metabolism and nutritional quality of adults Litopenaeus vannamei (wet weight: 11.27 ± 0.73 g, body length: 12.45 [...] Read more.
Photoperiod serves as a significant environmental signal for organisms and plays a critical role in regulating their metabolic processes. This research aimed to investigate the lipid metabolism and nutritional quality of adults Litopenaeus vannamei (wet weight: 11.27 ± 0.73 g, body length: 12.45 ± 0.42 cm) under five photoperiods (0L:24D, 8L:16D, 12L:12D, 16L:8D, and 24L:0D) for 40 days in recirculating water systems (RASs). The 24L:0D group increased lipid metabolism, as indicated by increased lipid metabolism enzyme levels and related gene expression linked to lipogenesis. Additionally, shrimp in the 24L:0D exhibited the highest value of crude fat. The 0L:24D showed a significantly reduced content of crude fat compared with the 8L:16D and 12L:12D. In 24L:0D, the content of total essential amino acids (TEAAs), total hydrolyzed essential amino acids (THEAAs), and total non-essential amino acids (TNEAAs) increased significantly. Similarly, the content of polyunsaturated fatty acids (PUFAs) in 24L:0D was also higher than in other groups. Conversely, 0L:24D resulted in lower metabolic activity and a reduction in PUFA content. In conclusion, prolonging light could benefit shrimp cultivation. This study thoroughly examined the effects of varying photoperiods on muscle quality and lipid metabolism in L. vannamei, providing essential insights for the improvement of indoor aquaculture environments. Provision of light for 24 h improves production but has some adverse effects on animal welfare, so a 16 h light cycle is recommended. Full article
(This article belongs to the Special Issue Fish Farming in Recirculating Aquaculture Systems)
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