The study looked at how different types of fish food with varying protein levels affected the growth and profits of Nile tilapia raised in a rice and fish farming system. They tested traditional, formulated, and commercial feeds, as well as having a control group with no feed. Fish fed the commercial feed grew the most and had the best economic return. However, the control group had the highest benefit-cost ratio, followed by the formulated feed group. The study suggests that using a formulated feed with 26% protein is the best choice for making money in this type of farming system.