Advances in Integrated Rice-Fish Farming

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

Deadline for manuscript submissions: 20 May 2026 | Viewed by 270

Special Issue Editors


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Guest Editor
College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 625014, China
Interests: rice–fish co-culture system; fish cultivation in rice paddies; heavy metal; nitrogen-phosphorus nutrient cycling; risk assessment; microplastics; Cadmium

E-Mail Website
Guest Editor
College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 625014, China
Interests: rice–fish co-culture system; heavy metal; microplastics; Cadmium; cold stress; apoptosis; autophagy

Special Issue Information

Dear Colleagues,

Integrated rice–fish farming is a traditional yet innovative agro-ecological practice that synergizes crop cultivation with aquaculture production. This system not only enhances resource use efficiency, biodiversity, and ecosystem resilience, but also contributes to food security, poverty alleviation, and climate adaptation in rural communities. Recent years have witnessed rapid progress in understanding its ecological mechanisms, nutrient cycling, and microbial dynamics, as well as technological innovations in breeding, feed formulation, and environmental monitoring. Meanwhile, challenges such as heavy metal accumulation, greenhouse gas emissions, and system optimisation under climate change remain critical research frontiers.

This Special Issue invites original research articles, data-enabled reviews, and comparative case studies that deepen our understanding of integrated rice–fish systems. Topics of interest include, but are not limited to, the following:

  • Ecological functions and ecosystem service valuation;
  • Greenhouse gas fluxes and mitigation pathways;
  • Heavy metal biogeochemistry and safe operating thresholds;
  • Genetic improvement, selective breeding, and sex control of cultured fish;
  • Precision nutrient stewardship and closed-loop fertiliser strategies;
  • Carbon and nitrogen cycling microbial communities;
  • Model-based system optimisation and climate-adaptive management;
  • Socio-economic assessments of food security, livelihood, and gender equity outcomes;
  • Policy incentives, certification schemes, and global market potential;
  • Intelligent equipment and Digital Twins (sensor networks, AI feeding, blockchain traceability).

Prof. Dr. Zongjun Du
Dr. Dongjie Wang
Guest Editors

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Keywords

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

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Published Papers (1 paper)

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Research

16 pages, 1139 KB  
Article
Study on the Bioavailability of Arsenic in the Rice–Crayfish Farming System
by Kelei Zhang, Shoudong Zhang, Longjun Deng, Tiancai Li, Li Liu, Wei Luo, Yibo Zhang, Yongyao Guo, Dan Liu, Shiyong Yang, Jun Wang, Dongjie Wang and Zongjun Du
Fishes 2025, 10(12), 645; https://doi.org/10.3390/fishes10120645 - 15 Dec 2025
Viewed by 180
Abstract
Rice–fishery integrated farming has expanded rapidly in China, yet its implications for arsenic (As) accumulation remain insufficiently understood. This study evaluated As bioavailability and enrichment in a rice–crayfish farming system (RCFS) by establishing controlled field plots with soil As concentrations ranging from 5 [...] Read more.
Rice–fishery integrated farming has expanded rapidly in China, yet its implications for arsenic (As) accumulation remain insufficiently understood. This study evaluated As bioavailability and enrichment in a rice–crayfish farming system (RCFS) by establishing controlled field plots with soil As concentrations ranging from 5 to 40 mg/kg under three water-management regimes: alternating wetting and drying (AWD), continuously flooded (CF), and RCFS. Soil–water physicochemical variables and As accumulation in both rice organs and crayfish tissues were systematically analyzed, followed by human health risk assessment. Inorganic As in brown rice increased linearly with soil As, following Y = 0.0117X + 0.0598 (R2 = 0.96), and the estimated soil safety thresholds were 26.48 mg/kg for AWD, 11.98 mg/kg for RCFS, and 9.24 mg/kg for CF. AWD consistently exhibited the lowest As risk due to its ability to elevate soil Eh and maintain a more favorable pH, thereby suppressing As mobilization. Compared with CF, RCFS reduced As bioavailability through crayfish-induced bioturbation, which increased Eh, enhanced SOM and CEC, and improved soil aeration. As accumulation in crayfish tissues also rose with soil As, with abdominal muscle As fitting Y = 0.0085X + 0.0553 (R2 = 0.8588). Although abdominal muscle met safety limits, the hepatopancreas accumulated substantially higher As and exceeded carcinogenic risk thresholds, even at 5 mg/kg of soil As, indicating a potential health concern for consumers. This work elucidates As dynamics and enrichment mechanisms in RCFS, providing guidance for safer rice–crayfish production in As-impacted areas. Full article
(This article belongs to the Special Issue Advances in Integrated Rice-Fish Farming)
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