author(s)
Vijayakumar S, Muttappa Khavi, Vijay Atnur and Rajanna KB

abstract
The present study was conducted to evaluate the growth performance of Amur common and Catla at polythene-lined farm ponds of Vijayapur district, Karnataka. For this study, two Farm pond selected located at two villages viz., Ronihal, Basavanabagewadi taluk and Kakhandaki, Vijayapur taluk of Vijayapur district, Karnataka. Fingerlings of Amur common carp and catla of uniform size were selected and stocked at the rate of 1 No/m² and the fishes were fed with floating carps feed @ 5% of fish body weight. In both the farm ponds located at Ronihal and Kakhandaki, Amur common carp had shown the highest growth in terms of gain in weight and length (1208.9g, 29.1 cm and 1208.9g, 29.1 cm respectively) compared to Catla (809g, 28.0cm and 919.05g, 28.3cm respectively). The specific growth rate of Amur common carp was highest both in Ronihal farm pond (2.29%) and Kakhandaki farm pond (2.33%) compared to Catla. The survival rate was also higher in Amur common carp in both the farm ponds of Ronihal (82%) and Kakhandaki (85%) compared to Catla (78 and 80% respectively). Amur common carp exhibited a better growth compared to Catla, which may be due to the omnivorous feeding habit and burrowing nature. It could be inferred from the study that Amur common carp could be incorporated as an alternative species against existing common carp and Mrigal and it can be culture with Catla by following the Stocking ratio 50: 50 would improve fish production.