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Ecohydraulics and Fish Behavior Simulation

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Hydraulics and Hydrodynamics".

Deadline for manuscript submissions: 10 February 2026 | Viewed by 798

Special Issue Editor


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Guest Editor
Sate Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, A-1 Fuxing Rd., Beijing 100038, China
Interests: fish passage; hydrodynamics; numerical simulation; ecohydraulics; fish behavior; evaluation of fishway; nature-like fishway; fish lift
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The development of hydropower provides services for the deployment of water resources, the storage of clean energy and the prevention of disasters. However, hydropower has inevitably altered the natural environment of rivers, changed the conditions of fish habitats, and resulted in changes in the movement of fish. Hydraulics can be perceived by fish via their hydrodynamic sensory system and be used to alter the behavioral responses of fish. The effects of hydraulics on the behavior of fish is associated with several challenges, including the swimming abilities of fish, the hydraulics of fish passing facilities, and behavior of fish during passage.

The Special Issue focuses on the advancement of ecohydraulics and the simulation of fish behavior, and welcomes the submission of reviews, approaches, ideas, and technologies.

The scope of this Special Issue includes, but is not limited to, the following topics:

  • Fishway structure design and optimization
  • Fishway hydraulics
  • Fish attraction facilities and efficiency
  • Ecohydraulics
  • Fish-friendly fishways
  • Hydrodynamics
  • Fish behavior experiments and simulations
  • Field monitoring
  • Evaluation of fish passage
  • Fish lift

Prof. Dr. Tiegang Zheng
Guest Editor

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Published Papers (1 paper)

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Research

23 pages, 1124 KB  
Article
Analysis of the Spawning Response Characteristics of Four Major Chinese Carps to Eco-Hydrological Processes in the Three Gorges Reservoir
by Zicheng Wang, Junqiang Lin, Di Zhang, Tiegang Zheng, Lixiong Yu, Yizhe Wang and Yufeng Ren
Water 2025, 17(22), 3212; https://doi.org/10.3390/w17223212 - 10 Nov 2025
Cited by 1 | Viewed by 496
Abstract
The middle reaches of the Yangtze River are a crucial breeding habitat for four major Chinese carps. The ecohydrological characteristics of their spawning grounds are crucial factors influencing spawning for these species: black carp (Mylopharyngodon piceus), grass carp (Ctenopharyngodon idella [...] Read more.
The middle reaches of the Yangtze River are a crucial breeding habitat for four major Chinese carps. The ecohydrological characteristics of their spawning grounds are crucial factors influencing spawning for these species: black carp (Mylopharyngodon piceus), grass carp (Ctenopharyngodon idella), silver carp (Hypophthalmichthys molitrix), and bighead carp (Aristichthys nobilis). To investigate the impact of ecohydrological processes within the Three Gorges Reservoir on spawning, this study focused on the spawning grounds of the four major Chinese carps in the Yichang–Yidu section of the Yangtze River. By identifying key ecohydrological indicators and leveraging hydrological and spawning monitoring data from 2013 to 2024, the response characteristics of the four major Chinese carps’ spawning to these hydrological processes were analyzed. The results showed that the key ecohydrological indicators currently stimulating spawning for the four major Chinese carps are the fish-perceived daily flow rate increase, the fish-perceived cumulative flow rate increase, and the daily flow rate increase. These three indicators are significantly positively correlated with the scale of spawning for the four major Chinese carps. The thresholds for spawning at least 20% of the annual spawning total are: a perceived daily flow increase (Pda) of 4.52–36.05%; a perceived cumulative flow increase (Pcu) of 36.15–180.23%; and a daily flow increase (Qav) of 588–2825 m3/s. The optimal water temperature for the reproduction of the four major Chinese carps is 21–23 °C. Overall, since the Three Gorges Reservoir’s normal operation, the frequency and scale of spawning for the four major Chinese carps have been highest during periods of rising water. It is recommended that, within the corresponding thresholds, ecological operation be conducted twice a year, once in mid-June and once in early July or late June. Daily flow increases can be controlled within the range of 588–2000 m3/s. This study analyzed the correlation between eco-hydrological indicators and the stimulation of spawning of the four major Chinese carps, providing optimized flow ranges and habitat conditions for ecological operation, which is conducive to promoting the reproduction and spawning of the four major Chinese carps in the Yichang–Yidu spawning grounds in the middle reaches of the Yangtze River. Full article
(This article belongs to the Special Issue Ecohydraulics and Fish Behavior Simulation)
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