Length-weight relationships of 55 fish species from the Three Gorges Reservoir in the Yangtze River, China

Abstract

SummaryThe paper reports the length-weight relationships of 55 species from the Three Gorges Reservoir (TGR) of the Yangtze River, China, and the largest reservoir in the world. A total of 24,176 specimens were collected from July 2012 to January 2015.Length-weight relationships for 33 fish species not recorded previously in FishBase, and the maximum total lengths computed for eight species are presented. The a values varied between 0.00054 and 0.01923, and the b values ranged from 2.729 to 3.583.The results will be useful for the application of sustainable management and conservation of these fishes in the TGR of the Yangtze River.

Length-weight relationships for five fishes in the Pengxi River, a main tributary of the Three Gorges Reservoir, China

“…Comparing the obtained b values with those of previous studies (Cao, Yang, Cai, & Pan, 2016;Chen et al, 2016;Duan et al, 2015;Lei, Liang, Sui, & Chen, 2015;Que et al, 2015;Yang et al, 2016) value represents the body form of fish (Froese, Thorson, & Reyes, 2014), and is affected by a number of factors such as gonad maturity, sex, diet, stomach fullness, health, age, fishing time as well as the area and fishing vessels (Sani et al, 2010). However, these factors were not considered in the present study.…”

Length–weight relationships for five fish species from the middle reaches of the Yangtze River, China

“…In this work, Sarcocheilichthys nigripinnis showed a slightly higher b value (3.230 vs 3.145) when compared with the previous result provided by Ye, Li, Feng, and Cao (). This variation could be attributed to the sample size, sampling season, habitat, and possibly to differences in the length ranges (Chen et al., ; Froese, ; Yang et al., ), which were not considered when the LWRs were established in this study. The LWR estimate for Culter oxycephaloides should be considered as tentative due to small sample size of 9.…”

Length-weight and length-length relationships of five fish species from the Zigui section of the lower Three Gorges Reservoir, Hubei Province, China

“…The present study provides estimates for five species from the Three Gorges Reservoir. Knowledge of their length‐weight relationships (LWRs) and length‐length relationships (LLRs) are useful in fisheries science (Chen et al., ; Froese, ; Mendes, Fonseca, & Campos, ).…”