Inhabit steep outer reef slopes, channel slopes, and lagoon reefs (Ref. 1602). Benthopelagic at 2-60 m (Ref. 58302). Usually solitary but may occur in pairs. Juveniles are encountered in coral-rich areas of lagoon reefs, where staghorn Acropora corals abound (Ref. 1602); also in algae reefs or seagrasses (Ref. 48636, 41878). Adults rove across the reefs by day and rest in reef caves and under coral ledges at night (Ref. 31343). Primary food are mollusks, fishes, sea urchins, crustaceans, and other invertebrates. One of the few predators of toxic animals such as sea hares, boxfishes and crown-of-thorns starfish (Ref. 1602). Oviparous, distinct pairing during breeding (Ref. 205). Found in Hong Kong live fish markets (Ref. 27253).