The Rectangular trigger fish (Rhinecanthus rectangulus) is a common trigger fish found on O‘ahu as well as the other Hawaiian Islands. It has an incredibly long Hawaiian name, it is called the Humuhumunukunukuāpua‘a.  The Rectangular trigger fish is typically found at 25 feet depth but can be seen in shallower waters as well. The eyes of the reef trigger fish are positioned high and relatively far back on the body, allowing the fish to prey on the venomous long-spined sea urchins. Despite its size, this fish can get quite territorial and may chase larger animals, including scuba divers, away.  To protect itself, this colorful reef dweller may find refuge in a cave or crevice. The Rectangular trigger fish is the Hawai‘i State fish. The Hawaiian name of the fish means “Humuhumu with a snout like a pig.”