The aim of this work was to find out about the diet and ecology of Tilapia niloticus and Limnotrissa miodon in the littoral zones of Lake Kivu in the case of the Baie de la sncc using the occurrence method, which specifies the type of diet of these two species by direct survey. Our feeding results show 50% cow manure, 26% chicken droppings and 24% rice flour in the cages and on the surface of the lake, and the ecology of the two species living in symbiosis in the sncc bay, Lake Kivu.