Literature about digestive functions in teleost fishes is extensive in some areas, almost nil in others. The material to be presented here is not a comprehensive review of that literature because there are two recent reviews (Harder, 1975; Kapoor et al., 1975), which have extensive bibliographies on both the anatomy and physiology of teleost digestive systems. Readers desiring additional information should consult both reviews because they tend to be complementary, with Harder emphasizing anatomy of European fishes while Kapoor and co-authors emphasize digestion in North American and Asian fishes.