ON SOME BIOLOGICAL ASPECTS OF SCHIZOTHORAX RICHARDSONII (GRAY) OF SARJU RIVER, KUMAUN HIMALAYAS

摘要

Some aspects of biology of famous game and food fish, the. snow trout, Schizothorax richardsonii. (Gray) of Kumaun Himalayas have been attempted. The fish is herbivorous in feeding habits in young and adult stage while the fry and fingerings are omni-herbivorous in feeding habits (collected from Sarju river). Qualitative and quantitative estimation of dietary spectrum of the fish have been studied for last one year, 2007. Straight line relationship between total length and body weight (W= -281.12 +1.73 L, where r = 0.92) of the fish has been established. The condition factor was variable month - wise.and season - wise with a relationship to the feeding habits and spawning period of the fish. A population study in terms of size, weight and sex - ratio has been made in the paper.