This study evaluated the effects of replacing maize gluten with rice bran as a feed supplement on fish growth in a composite culture system. Two earthen ponds were stocked with three fish species and provided different feed ratios: Pond 1 received maize gluten and rice bran at a 5:0 ratio, while Pond 2 received a 1:4 ratio. Fish growth was measured in terms of weight gain, fork length, and total length. Results showed that all growth measures were significantly higher for fish in Pond 2 that received the 1:4 maize gluten to rice bran ratio, indicating it is a more effective supplemental feed for improved fish yields compared to maize gluten alone.