author(s)
Bhatt Nakul Ashokbhai, Tank PR, Kavindra J and Dr. BK Sharma

abstract
Specimens of Catla catla belonging to different age classes from Khodiyar Dam of Dhari, Gujarat have been studied for growth using the scale method. Maximum nine annual rings were observed and used to assess selected growth parameters i.e. annual length increase (h), annual increase in weight (w), growth characteristics (C_th), Specific linear growth (C_l), Growth constant (C_lt), Specific rate of weight increase (C_w), Index of species average size (Øh) and Index of population weight growth intensity (ØC_w). On the basis of growth parameters, the harvestable size of 42.50 cm and age of 3+ year classes was calculated for Catla catla. Harvestable size of 42.50 cm was calculated in the present study which appears to be satisfactory and would offer a fair chance to fish to spawn before it is caught.