THE STUDY OF GROWTH MODEL OF PSEUDOHEMICULTER DISPAR (PETERS) IN THE BEIJIANG RIVER

In April 2008, 187 specimens were collected in the Beijiang River for the study on the growth model of Pseudohemiculter dispar (Peters), scales used for age determination. the correlation formula of the body length (L, cm) and scale radius (R, mm) is: L= 3.726 2R + 1.491 5, and the correlation formula of the body length (L, cm) and weight (W, g) is : W=0.031 8L2.708 1. The von Bertalanfy growth model， Logistic growth model，Gompertz growth model were used for fitting the 了length and weight growth of Pseudohemiculter dispar (Peters). The sum of residual squares were compared with each other. The results show that the Gompertz growth formula is the best precise model to fit the growth and the Logistic growth formula is the second . The von Bertalanfy growth formula is the poorest model to fit the growth.