the present study describes some biological parameters, including sex ratio, length-frequency distribu- tions, size at sexual maturity, fecundity as well as length-weight (LWR) and length-length (LLR) relationship of the Gan - ges River sprat Corica soborna (Hamilton, 1822) (Clupeidae), an important target species for small scale fisheries in the Mathabhanga River in Bangladesh. a total of 135 specimens ranging from 30.6-48.9 mm tL (total length) and 0.22-1.20 g BW (body weight) were analysed. sampling was done using traditional basket traps and funnel bag nets between January and December 2004. The sex-ratio showed no significant differences from expected value of 1:1 (χ 2 = 0.07, p > 0.05). the size at sexual maturity (TL 50) for C. soborna females was estimated to be 44.4 mm tL and the mean fecundity of the sam- pled population was 1,280 ± 870 eggs, ranging from 420 to 3,240. The allometric coefficient b values of the LWR indicated isometric growth (~3.0) for both males and females (2.946 and 2.968, respectively). the LLR analysis between tL and fork length (FL) showed a highly significant correlation in both sexes (r 2 > 0.911, p < 0.001). the data presented in this study would be useful for the sustainable management of the Ganges River sprat fishery in the Mathabhanga River in Bangladesh and neighbouring countries.