Growth, Mortality and Stock Assessment of <i>Squaliobarbus curriculus</i> (Actinopterygii: Cypriniformes: Xenocyprididae) from Lanxi Section of Qiantang River, China

Population dynamics parameters and stock status of Squaliobarbus curriculus (Richardson, 1846) were analyzed from May to September 2021 in the Lanxi section Qiantang River. FiSAT II software program was used. The growth coefficient K = 0.21 year–1, asymptomatic length L∞ 39.48 cm, age at theoretical zero-length t0 –0.74 years estimated. von Bertalanffy function calculated as Lt 39.48[1 – e–0.21(t + 0.74)]. curve for weight had an inflection 5.86 years, corresponding 29.61 cm standard 372.29 g weight. natural mortality rate (M), fishing (F), total (Z) 0.51, 0.61, 1.12 respectively. exploitation ratio (E) 0.54, which is greater than value 0.5 suggested by Gull (1971), indicating a probable state overdevelopment. annual average number biomass S. River 31.86 × 106 individuals 3656.82 t,