Home > Fishes > Surgeonfishes > Acanthurus nigroris

Updated 8/17/2013

Family Acanthuridae


Acanthurus nigroris

Hanauma Bay, Oahu, 3 feet



Hanauma Bay, Oahu, 20 feet


Juvenile, Hanauma Bay, Oahu, 20 feet


Hanauma Bay, Oahu, 15 feet

Juvenile, Haleiwa Trench, Oahu, 10 feet


A solitary species common on shallow reefs where it feeds upon algae.  Base color changes at will from light brown to almost black, with or without a light band at the base of the tail, neon blue fin margins and wavy blue lines on the body, and a pair of black spots at the base of the dorsal and anal fin.  Attains 10 inches.  Hawai'i and the Tropical Pacific.