Abstract
Ontogenetic changes in the diet and foraging behavior of the wrasse, Coris gaimard, were studied on shallow reefs at Kuchierabu-jima Island, southern Japan. C. gaimard selected larger prey with growth, smaller individuals feeding on small crustaceans (e.g., gammarideans) and larger ones feeding on larger molluscs (i.e., pelecypods, gastropods and chitons) and crabs. Although C. gaimard usualIy took prey from the surface of the substrate, individuals of 5 cm TL and over also foraged for prey under gravel by turning over the latter. The relative frequency of gravel turning and size of gravel turned over increased with growth, larger fish being able to take correspondingly larger prey (e.g., molluscs and crabs) hiding under larger gravel
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