The unicorn fishes are 17 species of tropical marine surgeonfishes in the genus Naso. They are so named because of a spike that protrudes from its forehead; however some species have a bulbous protrusion rather than a pronounced spike, and some lack a spike altogether. Unicorn fishes usually have a pair of spines on each side of the tail shaft that are used for defense. The diet of the unicorn fish consists primarily of algae.

Species

• Whitemargin unicornfish, Naso annulatus (Quoy & Gaimard, 1825).
• Humpback unicornfish, Naso brachycentron (Valenciennes, 1835).
• Spotted unicornfish, Naso brevirostris (Cuvier, 1829).
• Naso caeruleacauda Randall, 1994.
• Gray unicornfish, Naso caesius Randall & Bell, 1992.
• Elegant unicornfish, Naso elegans (Rüppell, 1829).
• Horseface unicornfish, Naso fageni Morrow, 1954.
• Sleek unicornfish, Naso hexacanthus (Bleeker, 1855).
• Orangespine unicornfish, Naso lituratus (Forster, 1801).
• Naso maculatus Randall & Struhsaker, 1981.
• Squarenose unicornfish, Naso mcdadei Johnson, 2002.
• Slender unicorn, Naso minor (Smith, 1966).
• Naso reticulatus Randall, 2001.
• Oneknife unicornfish, Naso thynnoides (Cuvier, 1829).
• Bulbnose unicornfish, Naso tonganus (Valenciennes, 1835).
• Humpnose unicornfish, Naso tuberosus Lacépède, 1801.
• Bignose unicornfish, Naso vlamingii (Valenciennes, 1835).

References

• Dallas World Aquarium
• Wetwebmedia.com
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Acanthuridae

Nasendoktorfische | Naso (poisson) | Naso (rodzaj)