Fishing behaviour in Galago crassicaudatus E. Geoffroy, 1812 (Prosimiae; Lorisiformes; Galagidae).

Fishing behaviour was first observed in Galago crassicaudatus. Some of the animals (Maria, Werner, Ilse) was born in the wild, some in captivity in family groups [Welker, 1972]. The colony had been under permanent observation since 1971. The following results were obtained: (1) One animal had to begin with fishing behaviour. (2) The other animals learned it by watching one animal fishing. (3) Animals born in captivity, deceived by the refraction of the water, grasped constantly too high.