Fin's Fish Guide
The Bignose unicornfish (Naso vlamingii) is a saltwater fish of the family Acanthuridae that grows up to 60 cm.
Description
The bignose unicornfish is a large surgeonfish from the Indo-Pacific, from East Africa to the Galapagos. The species grows to about 60 cm and has a blue-grey body with fine blue lines and spots, a bump on the forehead and, when excited, a bright blue glow. On each side of the tail base it bears sharp bony keel plates that can cause cuts. By day it forms schools above steep reef slopes and eats zooplankton. The IUCN assesses the species as Least Concern (LC).
Frequently asked questions
How do you recognise the Bignose unicornfish?
The Bignose unicornfish has a torpedo-shaped body, is mainly blue and shows a spots pattern. Forehead hump and sharp caudal keel plates; shows a bright blue glow
Where does the Bignose unicornfish live?
The Bignose unicornfish lives in the sea (marine waters) and is mostly found around stony or rocky ground. Indo-Pacific
How big does the Bignose unicornfish get?
The Bignose unicornfish grows to a maximum of about 60 cm.
Is the Bignose unicornfish dangerous to humans?
The Bignose unicornfish can cause injury; handle it with care. The bony keel plates on the tail base are sharp and can cause deep cuts. Handle the fish with care; clean and disinfect any wound and seek medical help for a deep cut.
Is the Bignose unicornfish edible?
Yes, the Bignose unicornfish is commonly eaten.
More photos
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All data
Identification
Appearance
Habitat & distribution
Behaviour & biology
For anglers
Safety
Status & sources
Same genus Naso
More from the family Acanthuridae
Want the complete picture on the Bignose unicornfish?
Point your camera at the fish and Fin names the species in seconds. Free, and the Bignose unicornfish is one of 12,519 species in the app.