Fecundity and gonadosomatic index of Glossogobius giuris (Hamilton, 1822) from the Payra River, Patuakhali, Bangladesh

Glossogobius giuris were collected during March to September 2013 from the Payra river to estimate the length-weight relationship with relative condition factor (K-n), fecundity, gonadosomatic index (GSI) and relation between fecundity and other parameters. The length-weight relationship was found to be Log W= 2.667 Log TL - 1.805 in male and Log W = 2.931 Log TL - 2.040 in female. The mean K-n were found to be 1.02 +/- 0.155 for male and 0.97 +/- 0.276 for female which indicates satisfactory condition of the fish population. The mean relative fecundity was ranged from 88495 to 264104 with a mean value of 171581 +/- 17855, having a average total length of 21.21 +/- 0.44 cm, body weight 70.22 +/- 4.62 g and gonad weight 2.74 +/- 0.31 g. The relationships among the fecundity, the total length, body weight, gonad weight were found to be linear and positively correlated. The mean GSI value was 3.42 +/- 0.33 and the highest GSI value was recorded 9.34 +/- 0.71 in the month of September. This study will help to introduce this species in sustainable aquaculture through proper management and for the development of induced breeding technique.