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This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

The Status of Fishery Resources in Poyang Lake, China, During Periods of Abnormal Drought

by
Legen Peng
1,
Sixin Wen
1,
Wenzhi Ma
1,
Haotian Jin
1,
Xinyuan Shi
1,
Guocai Zhu
1,
Jinxiang Yu
1,
Jialing Min
1,
Mingzheng Li
2,
Xinbin Duan
3,
Kai Liu
4 and
Sheng Wang
1,*
1
Aquatic Conservation and Rescue Center of Jiangxi Province, Nanchang 330096, China
2
Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
3
Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Science, Wuhan 430223, China
4
Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China
*
Author to whom correspondence should be addressed.
Fishes 2026, 11(1), 2; https://doi.org/10.3390/fishes11010002
Submission received: 14 November 2025 / Revised: 15 December 2025 / Accepted: 18 December 2025 / Published: 19 December 2025
(This article belongs to the Special Issue Adaptation and Response of Fish to Environmental Changes)
Versions Notes

Abstract

The status of the fishery resources in Poyang Lake, China, during periods of abnormal drought was examined using a comparative analysis of data from four fishery resource surveys performed during 2022 and 2023, in the first half (April–June) and the second half (September–November) of each year. A total of 91 fish species (11 orders, 17 families, 54 genera) were collected, with Cyprinidae accounting for 54.95% of the total species and Megalobrama skolkovii, Aristichthys nobilis, and Hypophthalmichthys molitrix as the dominant species. The Shannon-Weiner diversity, Pielou evenness, Simpson diversity, and Margalef richness indices were 3.30, 0.73, 0.95, and 6.93, respectively. The corresponding catch per unit effort (CPUE) values of the fish were 5.49 kg·(1000 m2·h)−1, 4.45 kg·(1000 m2·h)−1, 3.03 kg·(1000 m2·h)−1, and 2.75 kg·(1000 m2·h)−1, showing a clear decreasing trend across the successive sampling periods. The abnormal drought did not cause significant differences in the number of fish species and diversity indices (p > 0.05), but altered the fish community structure, characterized by reduced dominance of small, sedentary, and herbivorous fish, and led to a significant decline in CPUE (p < 0.05). This demonstrates that abnormal hydrological regimes can undermine the effectiveness of the 10-year fishing ban and threaten the recovery of fishery resources in river-connected lakes.
Keywords: community structure; diversity indices; CPUE; 10-year fishing ban; hydrological regime; ecological stress community structure; diversity indices; CPUE; 10-year fishing ban; hydrological regime; ecological stress

Share and Cite

MDPI and ACS Style

Peng, L.; Wen, S.; Ma, W.; Jin, H.; Shi, X.; Zhu, G.; Yu, J.; Min, J.; Li, M.; Duan, X.; et al. The Status of Fishery Resources in Poyang Lake, China, During Periods of Abnormal Drought. Fishes 2026, 11, 2. https://doi.org/10.3390/fishes11010002

AMA Style

Peng L, Wen S, Ma W, Jin H, Shi X, Zhu G, Yu J, Min J, Li M, Duan X, et al. The Status of Fishery Resources in Poyang Lake, China, During Periods of Abnormal Drought. Fishes. 2026; 11(1):2. https://doi.org/10.3390/fishes11010002

Chicago/Turabian Style

Peng, Legen, Sixin Wen, Wenzhi Ma, Haotian Jin, Xinyuan Shi, Guocai Zhu, Jinxiang Yu, Jialing Min, Mingzheng Li, Xinbin Duan, and et al. 2026. "The Status of Fishery Resources in Poyang Lake, China, During Periods of Abnormal Drought" Fishes 11, no. 1: 2. https://doi.org/10.3390/fishes11010002

APA Style

Peng, L., Wen, S., Ma, W., Jin, H., Shi, X., Zhu, G., Yu, J., Min, J., Li, M., Duan, X., Liu, K., & Wang, S. (2026). The Status of Fishery Resources in Poyang Lake, China, During Periods of Abnormal Drought. Fishes, 11(1), 2. https://doi.org/10.3390/fishes11010002

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