Image: Humpnose Unicornfish, Naso tonganus

Humpnose Unicornfish, Naso tonganus

A juvenile Humpnose Unicornfish at Nelson Bay, New South Wales, 2011.

Tom Davis
© Tom Davis


Thank you to Rudie Kuiter for his help identifying this fish.  Rudie pointed out that juveniles of this species and the Ringtail Unicornfish, Naso annulatus, both have a white ring around the caudal peduncle.  The ring of Naso annulatus, however, is usually more diffuse.

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Tags fishes, ichthyology, Naso tonganus, Humpnose Unicornfish, juvenile, Acanthuridae,