Kervath, S., Götz, A., Greven, H.

Feeding habits of Anableps microlepis (Anablepidae, Cyprinodontiformes) from two ecologically different habitats in Trinidad, West Indies

Summary: Two beaches at Trinidad populated by the Four-eyed Fish Anableps microlepis differ in substrate and organisms that serve as diet for the fish. Manzanilla at the west coast is characterised by a sandy beach of low organic content (2.02 - 2.26 %) and weak tides. Waterloo at the east coast has a muddy substrate of high organic content (5.14 - 12.13 %) and pronounced tides. In Manzanilla the diet of A. microlepis consisted of some microbenthos organisms and of Emerita portoricensis (Crustaceae) and Donatia denticulata (Bivalvia). In Waterloo fish fed on substrate including detritus and small food particles (< 2 mm in length, different „worms”, crustaceans, algae). Relative intestinal length revealed 1.34 ± 0.184 on average in 22 specimens from Manzanilla and 1.56 ± 0.199 on average in 17 specimens from Waterloo (p > 0.0005).