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Length Weight and Length-Length Relationships of Nine Native Fish Species from the Yichang Reach of the Middle Yangtze River, China

Length Weight and Length-Length Relationships of Nine Native Fish Species from the Yichang Reach of the Middle Yangtze River, China

Sha Li1,2, Yacheng Hu1,2, Wenjing Li3, Wei Su1,2 and Wei Jiang1,2*

1Chinese Sturgeon Research Institute, China Three Gorges Corporation, Yichang 443100, China
2Hubei Key Laboratory of Three Gorges Project for Conservation of Fishes, Yichang 443100, China
3Institute of Science and Technology, China Three Gorges Corporation, Beijing 100038, China
 
Sha Li and Yacheng Hu contributed equally to this study.
 
* Corresponding author: jiangwei0309@qq.com

ABSTRACT

We determined the length-weight relationships (LWRs) and length-length relationships (LLRs) for nine fish species belonging to three families inhabiting the Yichang reach of the middle Yangtze River, China. The samples were collected with gill nets (2×50 m, mesh size: 40 and 60 mm) between November 5th, 2019, and December 31st, 2019. A total of 1252 specimens were used to estimate the related parameters. The LWRs parameters of all nine species were found to be significant (P <0.05). The values of b in LWRs ranged from 2.455 to 3.009. New maximum total length (TL) and standard length (SL) records for two of the nine species were reported, and the first report of LWRs of Xenocypris davidi was provided. The results of our study provided Fish Base with new data and basic biological information for research, management, and conservation of the middle Yangtze River ecosystem.

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Pakistan Journal of Zoology

October

Pakistan J. Zool., Vol. 56, Iss. 5, pp. 2001-2500

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