Md. Yeamin Hossain, Asma Afroz Chowdhury, Zannatul Mawa, Md. Rabiul Hasan, Md. Akhtarul Islam, Md. Ataur Rahman, Obaidur Rahman, Dalia Khatun, Most. Shakila Sarmin, Sabana Nasrin, Md. Ashekur Rahman, Akhery Nima, and Farida Parvin

DOI: 10.14456/sjst-psu.2021.191

pp. 1466 - 1472

Abstract

For the first time, we describe the life-history traits including growth pattern, condition factors including (relative
weight, W_R), form factor (a_3.0), size at sexual maturity (L_m), and natural mortality (M_w) of Gudusia chapra in the Mahananda
River, Bangladesh. Fishing gears, including gill (fash jal) and push nets (thela jal), were used for sampling during August 2016
to July 2017. Body lengths and weight (BW) of each individual were measured. A total of 226 individuals ranging from 6.20-
15.10 cm total length (TL) and 2.44-26.10 g BW were collected. On the basis of b value, the growth pattern of G. chapra was
negative allometric (b<3.0). K_F was the best for assessing the overall health of this species. W_R was not significantly different
from 100 indicating balance population. Also, a_3.0 was 0.0062, which indicates that the fish was fusiform in shape. Moreover, L_m
and M_w were 9.13 cm TL and 1.14 year^-1, respectively. These results should benefit shad management.