The redfang triggerfish has a blue, kite-shaped body and prominent red teeth. It has a moon-shaped, forked tail which is pale blue.
When threatened, the triggerfish can lock the first two spines of its dorsal fin together to prevent predators from swallowing it.
Grows up to 50cm long, and is usually taller than it is long.
Feeds at night on invertebrates and zooplankton
Lives on sheltered rocky and coral reefs in the Indo-Pacific Ocean.