author(s)
Vedrahi Prasad Bairwa, BK Sharma, SK Sharma and B Upadhyay

abstract
The present study was carried out to estimate the length-weight relationship and condition factor of selected freshwater fishes of Goverdhan Sager Lake, Udaipur, Rajasthan during January- June, 2018. The relationship between length and weight of Catla catla and Labeo rohita from fish catch was calculated by establishing correlation and regression between the two parameters. The exponent values of total length and weight varied from 0.676 to 1.495 and 0.336 to 6.046 for different length groups of Catla catla and Labeo rohita. The higher value of ‘n’ could be attributed to high rate of weight increase with per unit increase in length. The correlation co-efficient ‘r’ between total length and weight were found to be significant for all the length groups of both the species. The values of condition factor (K) of both the species were also computed and found that both the species performed well in Lake Environment. The maximum ‘K’ value was found 1.251 in Catla catla (group A) and 1.210 in Labeo rohita (group B). On the basis of length-weight data, the regression equations of body-weight on total body length were calculated.