Abstract: Clarias gariepinus of average weight 2.80 g were sourced from ARAC, Port Harcourt and used to evaluate the effect of feeding varied levels of Jackbean meal on carcass composition of the fish. 35% isonitrogenous diets of 0%, 5%, 10%, 15% and 20% dietary levels of JBM were formulated. These were fed to the fingerlings randomly assigned to 5 treatments-DT1 (Control), DT2, DT3, DT4 and DT5 respectively in 3 replicates of 13 fingerlings, each using 15 plastic aquaria of 250 x 150 cm dimension. The fish were fed at 5% body weight twice daily within the experimental period of 8 weeks. The carcass crude protein content of the treatments (47.65-48.54%) were significantly (p>0.05) different, treatments DT4 and DT5 higher than the rest. The lipid content of DT1 (control) was significantly (p<0.05) higher than the rest of the treatments. The ash composition for treatments DT1 (0%), DT2 (5%) and DT3 (10%) were significantly (p<0.05) lower than DT4 (15%) and DT5 (20%). Crude fibre contents for DT2 and DT3 were significantly (p<0.05) higher than the rest of the treatments, while DT1 and DT2 were higher than the rest for the moisture. Based on the trend of the carcass composition of the fish, there seemed not to be a major nutritional difference in the fish flesh due to varied levels of JBM.