A 72 days feeding trial was conducted on African catfish (Clarias gariepinus) fed on five diets (CP 5 40%) in which maize was replaced with kunnu waste at 0%, 25%, 50%, 75% and 100% respectively. Fingerlings of C. gariepinus were assigned to the five diets in a completely randomized design at 36 fish per treatment in Hapa nets suspended in an outdoor concrete tank; experimental fish were fed at 5% biomass daily. Results on performance and feed utilization showed linear correlation between specific growth rate and body weight gain (p . 0.05). However, feed intake increased with increased dietary levels of kunnu waste (p , 0.05). The best feed conversion ratio (FCR) was obtained from the control group while the poorest was recorded at 100% replacement (p . 0.05). This finding indicated that C. gariepinus can tolerate kunnu waste as dietary replacement for maize without adverse effect on performance.