Juvenile, Puako, Hawaii, 25 feet

Puako, Hawaii, 25 feet

Hanauma Bay, Oahu, 4 feet

Hanauma Bay, Oahu, 10 feet

Hanauma Bay, Oahu, 6 feet

Cabo Pulmo, Baja California, Mexico

Moku o Loe, Kaneohe Bay, Oahu, 2 feet

Night, Hanauma Bay, Oahu, 4 feet

Night, Hanauma Bay, Oahu, 4 feet

Night, Hanauma Bay, Oahu, 4 feet

Hanauma Bay, Oahu, 25 feet

Old, Hanauma Bay, Oahu, 25 feet

Spawning Color, Hanauma Bay, Oahu, 25 feet

Juvenile, Makua, Oahu, 10 feet

Night, Kapoho, Hawaii, 3 feet

Sharks Cove, Oahu, 15 feet

Makaha, Oahu, 25 feet

Waimea Bay, Oahu, 25 feet

Waimea Bay, Oahu, 25 feet

Juvenile, Waimea Bay, Oahu, 25 feet

Ahihi Bay, Maui, 4 feet

Commonly seen on shallow reefs forming large feeding aggregations mixed with other species.  Young are common in tidepools during summer.  Hawaiian fish have a continuous sickle-shaped black bar below the pectoral fins.  Attains 11 inches.  Hawai‘i, the Indo-Pacific, and Tropical Eastern Pacific.  The Hawaiian population was once referred to as Acanthurus sandvicensis since the black mark below the pectoral fin is a diagonal bar rather than a series of dots.  Other locations throughout its range have their own unique pattern.  Mexican fish have two dots at the base of the pectoral fin.