Blackspine Unicornfish, Naso minor (Smith 1966)

Other Names: Little Unicorn, Slender Unicorn

A Blackspine Unicornfish, Naso minor, at north Bali, Indonesia. Source: Jim Greenfield / FishBase. License: All rights reserved

Cite this page as:
Dianne J. Bray, Naso minor in Fishes of Australia, accessed 16 Apr 2024,

Blackspine Unicornfish, Naso minor (Smith 1966)

More Info


Occurs on the northern part of the Great Barrier Reef to off Cairns, Queensland. The species occurs elsewhere in the tropical Indo-west Pacific.


Small groups feed on zooplankton well above the bottom. 

Species Citation

Axinurus minor Smith, 1966, Ichthyol. Bull. 32: 640, fig. 1a. Type locality: Pinda Reef, Mozambique.


Dianne J. Bray

Blackspine Unicornfish, Naso minor (Smith 1966)


Abesamis, R., Choat, J.H., Clements, K.D., McIlwain, J., Myers, R., Nanola, C., Rocha, L.A., Russell, B. & Stockwell, B. 2012. Naso minor. The IUCN Red List of Threatened Species. Version 2015.2. . Downloaded on 02 August 2015.

Allen, G.R. & Erdmann, M.V. 2012. Reef fishes of the East Indies. Perth : Tropical Reef Research 3 vols, 1260 pp.

Clements, K.D. & Randall, J.E. 1996. Four new records of surgeonfishes (Perciformes: Acanthuridae) from the Great Barrier Reef. Memoirs of the Queensland Museum 39(2): 339-342.

Kuiter, R.H. & Debelius, H. 2001. Surgeonfishes, Rabbitfishes and Their Relatives. A comprehensive guide to Acanthuroidei. Chorleywood, U.K. : TMC Publishing 208 pp.

Randall, J. E. 1986. Family No. 243: Acanthuridae. pp. 811-823 in Smith, M.M. & Heemstra, P.C. (eds). Smith's Sea Fishes. Johannesburg : Macmillan South Africa xx + 1047 pp. 144 pls.

Randall, J.E., 1994. Unicornfishes of the subgenus Axinurus Perciformes: Acanthuridae: Naso), with description of a new species. Copeia 1994(1): 116-124.

Randall, J.E. 2001. Surgeonfishes of Hawai'i and the World. Honolulu : Mutual Publishing and Bishop Museum Press 125 pp.

Randall, J.E., Allen, G.R. & Steene, R. 1997. Fishes of the Great Barrier Reef and Coral Sea. Bathurst : Crawford House Press 557 pp.

Smith, J.L.B. 1966. Fishes of the sub-family Nasinae with a synopsis of the Prionurinae. Ichthyological Bulletin, Department of Ichthyology, Rhodes University, Grahamstown 32: 635-682.

Quick Facts

CAAB Code:37437043

Conservation:IUCN Least Concern

Habitat:Reef associated

Max Size:30 cm SL

Max Size:8-55 m

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Species Maps

CAAB distribution map