Common in outer reef slopes at depths below 15 m, also occurs in protected bays and lagoons as shallow as 4 m. May also be found down to a depth of 160 m. At Madagascar it feeds night and day on brachyuran crabs, fishes, shrimps, and galatheid crabs. In Kenyan waters it feeds on crabs, stomatopods, fishes, ophiuroids, and octopus. In the Red Sea, mostly fishes and some crustaceans (mainly crabs) are consumed (Ref. 5222). In rocky and coral reefs of the Indo-Pacific Region (Ref. 9137).