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Family Acanthuridae


Acanthurus blochii

Juvenile, Puako, Hawaii, 25 feet


Hanauma Bay, Oahu, 20 feet

Night, Hanauma Bay, Oahu, 10 feet


Black Rock, Maui, 20 feet

Sharks Cove, Oahu, 15 feet


Right, Oceanarium, Waikiki

Tail-less mutant, Hanauma Bay, Oahu, 4 feet


Hanauma Bay, Oahu, 4 feet

 RINGTAIL SURGEONFISH         pualu         Hiraniza

Common on sandy reefs where it feeds upon algal film growing on sand.  Olive or dark brown with brown pectoral fins, a white band on the caudal peduncle, and a long black caudal spine.  Mutant missing its tail at Hanauma Bay was fully grown and did not appear to be impaired since surgeonfishes rely mostly on pectoral fins for locomotion.  Attains 17 inches.  Hawai'i and the Indo-Pacific.  Formerly confused with Acanthurus mata.