Author(s): VK Balai, LL Sharma and NC Ujjania

Abstract: The length weight relationship and condition factor of a fish provide the information on its growth and well-being of fish in the surrounding aquatic environment. In the present study these aspects have been investigated and elucidated with particular reference to the growth status and condition factor of three Indian major carps (Catla catla, Labeo rohita and Cirrhinus mrigala) in Jaisamand Lake (India). The morphometric data were collected from 119 specimens of each species during May 2005 to April 2006 and mean total length (54.081±1.139 cm, 51.601±0.754 cm and 51.723±0.541 cm) and mean weight (3197.971±157.814 gm, 1853.333±82.959 gm and 1701.250±52.123 gm) were observed for catla, rohu and mrigal, respectively. A strong linear relationship was observed between total length and weight variables. The value of regression coefficient (b) depicted isometric growth in mrigal, positive allometric growth in rohu and negative allometric growth in calta. The condition and relative condition factors were observed >1.0 which indicate the good conditions of all the three fish species in Jaisamand Lake. From this study it was concluded that the aquatic environment of Jaisamand Lake is fairly conducive for Indian major carps.

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