Triggerfishes

Distribution: Atlantic, Indian and Pacific Oceans. Usually compressed body. Pelvic fins fused to one spine. First dorsal spine with locking mechanism. With 12 principal rays in caudal fin. 18 vertebrae. Upper jaw non-protrusible. Upper jaw usually with four teeth in outer and three in the inner series on each premaxillary. Capable of rotating eyeballs independently. Triggerfish normally swim by undulating their second dorsal and anal fins, but will use their tail for rapid bursts. Most triggerfishes are solitary diurnal carnivores. They lay demersal eggs in a nest which is aggressively guarded by the female.