The lagoon triggerfish (Rhinecanthus aculeatus), also known as the blackbar triggerfish, the Picasso 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, humuhumunukunukuāpuaʻa (pronounced [ˈhumuˈhumuˈnukuˈnukuˈwaːpuˈwɐʔə]), also spelled humuhumu-nukunuku-a-puaʻa 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.
This species has been studied in a range of research contexts, from locomotion to colour vision research.
Lagoon triggerfish live in the reefs and sandy areas of coral reefs where it eats just about everything that comes along. 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 the larger titan triggerfish of the same family.
Picasso Trigger is a 1988 action adventure film starring Steve Bond, Dona Speir, Hope Marie Carlton, Roberta Vasquez, Cynthia Brimhall, and Harold Diamond. It was written and directed by Andy Sidaris.