Biology

ABSTRACT The fish Labeo bata (Hamilton 1822) was studied to understand the relationship of different girth lengths with other morphometric measures, especially Total Length (TL), Standard Length and Weight (WT). A total of 51 fish samples of different lengths and weights were studied. Three differently located girth lengths (GT1, GT2 and GT3) exhibited positive correlation with morphometric measures considered. However, the girth length behind the dorsal fin (GT3) of the fish showed strong linear positive correlationship (r2=0.902) with weight of the fish and it also depicted similar isometric growth result obtained from its length weight relationship. In relationships of WT = GLn (here, GL=GT3) and WT = TLn, the ‘n ’ values were almost equal to 2.9. Hence, the equation of WT = GLn with GL=GT3, can be used to obtain the weight of L. bata