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Diet and dietary habits of African Butter Catfish Schilbe mystus (Linne, 1766), an economically important fish in Oyan and Asejire lakes (southwest Nigeria) were examined between July 2000 and December 2001. Stomach contents were analysed using the numerical, frequency of occurrence and points methods. The fish is predatory but the diet differs among lakes and seasons. Insects were more important in the diet of small (&lt;than 18 cm) fish. There were also differences in the quantity of food encountered in the stomachs of male and female S. mystus in both habitats. The pattern of food selection and consumption in this species differed between the two lakes.

Diet and dietary habits of the fish Schilbe mystus (Siluriformes: Schilbeidae) in two artificial lakes in Southwestern Nigeria