Abstract
Four goldfish (Carassius auratus) were tested in an aquatic version of the eight-arm radial maze equipped with intra-maze cues. The fish received forty trials of free-choice task training followed by a test in which intra-maze cues were removed. As a result of training, the fish entered approximately 6.9 different arms in the first eight choices, and this score was significantly higher than the chance level. Any stereotypic response pattern, especially a tendency to enter adjacent arms in a rotate style, was not observed. In the test, choice accuracy deteriorated to the initial level by removal of intra-maze cues. These results suggest that goldfish can acquire a radial arm maze task by utilizing intra-maze cues.
