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White-faced Surgeonfish and Similar Species

Acanthurus nigricans

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Several fish can be confused with White-faced Surgeonfish. Here are the key differences.

Species often confused with {name}

Powder Blue Tang

Acanthurus leucosternon

Key differences: The Powder Blue Tang has a bright blue body, yellow dorsal fin, and a black face with a white throat patch, whereas A. nigricans has a dark body, yellow caudal fin, and a white patch below the eye.

Achilles Tang

Acanthurus achilles

Key differences: The Achilles Tang is dark brown to black with a prominent orange tear-drop shaped spot near the caudal peduncle and orange markings on the dorsal and anal fins. A. nigricans lacks these orange markings and has the distinct white cheek patch and yellow caudal fin.

Black Tang

Ctenochaetus hawaiiensis

Key differences: While also dark-bodied, the Black Tang (a bristletooth tang) has a more elongated snout and a different mouth structure adapted for scraping detritus. It lacks the prominent white cheek patch and bright yellow caudal fin of A. nigricans.

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