Length–weight, length-length and condition factor relationships of Labeo gonius (Hamilton) from Taunsa Barrage, River Indus, Pakistan

Abstract

The present work reports the length–weight (LWR), length-length (LLR) and condition factor relationships for Labeo gonius collected from Taunsa Barrage, River Indus, Pakistan. The results of LWR (W = a TLb) indicated W = -2.4032 TL3.29, for L. gonius, representing positive allometric growth pattern. All LWRs and LLRs and condition factor relationships were found significantly correlated. Fork length and eye diameter showed isometric growth pattern with both total length and body weight; standard length, pelvic fin length and caudal fin width showed the same pattern only with TL; while head width and caudal fin length grew isometrically with an increase in body weight of the L. gonius. On the other hand, head length, snout length, mouth gap, body girth, dorsal fin length, pectoral fin length and anal fin length showed allometric growth with the increase in size of wild captured L. gonius. Mean condition factor (K) value was found 0.98±0.06 in this study. The results also showed significant correlations of wet body weight and all studied lengths of L. gonius with condition factor. Length–length relationships for Labeo gonius were unknown to Fish Base. The results of this work would be beneficial for sustainable management as well as fishery managers.