Blackbar triggerfish

Lagoon triggerfish

The Lagoon triggerfish, (Rhinecanthus aculeatus) also known as the blackbar triggerfish, the Picassofish, and the Jamal, is a triggerfish, up to 30 cm in length, found on reefs in the Indo-Pacific region.

The Hawaiian name for the fish, humu­humu­nuku­nuku­āpua`a (ˌhumuˌhumuˌnukuˌnukuˌa:puˈaʔa), also spelled humuhumu-nukunuku-a-pua`a or just humuhumu for short (meaning "triggerfish with a snout like a pig) shares the same name with the Reef triggerfish, the state fish of Hawaii.


Lagoon triggerfish lives in the shallow flats and sandy areas of coral reefs where it eats just about anything it comes along (small fish, crustaceans, sea urchins, coral, worms, etc). They are always restlessly swimming around and can vigorously protect their territory against intruders, including divers, especially when guarding their eggs during reproduction season. Fortunately, their relative small size makes them much less dangerous than their larger brother the titan triggerfish.


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