Reef triggerfish

The reef triggerfish (Rhinecanthus rectangulus), also known as the rectangular triggerfish, wedgetail triggerfish or by its Hawaiian name humuhumunukunukuāpuaʻa (pronounced [ˈhumuˈhumuˈnukuˈnukuˈwaːpuˈwɐʔə], meaning 'triggerfish with a snout like a pig', also spelled humuhumunukunukuapua'a or just humuhumu for short), is one of several species of triggerfish. It is found in coral reefs in the entirety of the Western Pacific Ocean from North to South and Eastern Central Pacific. It is also found in the Indian Ocean from East to West and the Southeast Atlantic Ocean. It exists in 0 to 50 meters in depth.

Behaviour

The reef triggerfish has a terminal mouth that sits directly at the end of its snout. It has heavy teeth and incisors, and most of its food content is algae that is scraped off surfaces. It also feeds on crustaceans such as isopods from the sandy ocean floors. When foraging for food it remains close to its home or forages in shallow reefs away from living coral. This fish is considered a facultative omnivore because while it eats plants and animals it can sustain itself on a diet of either.