Found among rock walls, underwater lava ridges, and all kinds of well structured vertical rock formations (Ref. 11295). Juveniles found in shallow sandy lagoons (Ref. 5222), also in seagrass beds, mangrove lagoons, shallow lava reefs and inland lava ponds (Ref. 11295). Adults are mainly piscivorous, prey size increasing with predator size (Ref. 11295).