In view of the beneficial and some harmful impacts of use of livestock manure in fish farming, the present experiment was designed to assess the growth of Catla catla under the influence of low, medium and high doses of cow dung and poultry manure. Experimental water in tubs were treated with low (TC1)@ 10,000kg/

ha, medium (TC2) @ 15,000kg/ha and high (TC3) @ 20,000 kg/ha doses of cow dung and also with low (TP1) @ 8,000kg/ha, medium (TP2) @ 10,000kg/ha and high (TP3) @ 12,000 kg/ha doses of poultry litter, respectively along with control (T0). The control were maintained on conventional feed without nutrient input. Recording

of length and weight to know specific growth rate (SGR) and condition factor (CF) was done initially and after 60 days at the end of the experiment. Fish were also observed for mortality throughout the experiment to calculate the survival rate. The treatment with poultry manure and cow dung caused significant change (P<0.05) in length when compared to T0. Maximum increase in length of fish was observed in TC1 and TP2 throughout the experiment period. While in TC3, no growth was recorded till the end of experiment. Maximum weight gain was also observed in TC1. Highest values of SGR% and CF were seen in TC1. Maximum survival rate (%) was recorded in T0 and TC2 followed by TC1.