Length- weight study of fishes from Zhob River, Balochistan, Pakistan

Abstract

The Experimental fish samples were collected monthly during January to December 2011 from various fishermen of the Zhob river Balochistan A total number of 403 (342 Schizothorax progastus, 55 Caratus auratus 60 Tor tor, 50 Glypothorax sp) These fishes ranged from 9.42-20.2cm, 9.35-20.7cm, 7.5-16.1, 13.9-21.8cm in TL respectively. The regression coefficient of length- weight relationship and condition factor of C. auratus, S. progastus, T. tor, Glypothorax sp) were Log W = -0.12+2.67Log L (C. auratus) Log W =-0.01+2.25 Log L (S. progastus) Log W = -0.07+2.17 Log L (T. tor) Log W = -0.66+2.65 Log L (Glypothorax sp). The length weight relationship values indicated that growth of C. auratus S. progastus, T. tor and Glypothorax from Zhob river Balochistan was found to be positive allometry and regression coefficient ( b=2.17, 2.25, 2.65, 2,65) indicated as satisfactory growth of four species (C. auratus S. progastus, T. tor and Glypothorax sp) from Zhob river Balochistan. The values of relative condition factor (Kn) was calculated for combined sexes for all the fish species found to be mean Kn = 1.0, 1.01, 0.97 and 1.31respectively.