Length weight relationship and condition factor of Labeo rohita (ham.) collected from domesticated and riverine habitats

The length weight relationship and condition factor of Labeo rohita individuals collected from two different habitats and four sites i.e S-1 (River Sutlej at Ropar Headworks), S-2 (Harike Pattan at the meeting point of Sutlej and Beas), S-3 (Instructional fish farm of College of Fisheries, GADVASU, Ludhiana), S-4 (Aquaculture ponds from nearby farms of district Ludhiana) was estimated. A total 134 individuals of L. rohita comprising males and females of varying sizes were collected and the length weigh parameters were recorded. The mean average length ranged from 32.9–51.54 cm with corresponding mean weight from 431–1926 g at all the selected sites. The length and weight parameters of Rohu collected from all the sites showed a linear relationship as is evident from the correlation coefficient values ranging from 0.90 to 0.94 from S1-S4. The species showed negative allometric growth at all the four sites as depicted by exponent (b) values ranging from 2.70–2.93. The condition factor values ranged from 1.11–1.54 at all the selected sites. The condition factor values of 1.11 at the domesticated sites suggested that the habitat was more conducive in terms of optimum physicochemical factors and more availability of natural as well as the artificial feed leading to optimum growth and well-being of the fish.