Whitemargin Unicornfish (Naso annulatus )

Also known as Doctorfishes, Lancetfishes, Thorntails, Thorntail Fish, Whitemargin Unicornfish, Whitemargin Unicorn Tang, Bluefin Unicornfish, Bluefin Unicorn Tang, Long-horn Unicornfish.

Description

Also known as Doctorfishes, Lancetfishes, Thorntails, Thorntail Fish, Whitemargin Unicornfish, Whitemargin Unicorn Tang, Bluefin Unicornfish, Bluefin Unicorn Tang and Long-horn Unicornfish.

Found in small groups on steep outer reef slopes.
Can quickly change colour with mood.
They feed on plankton and algae.
Length - 100cm
Depth - 20-60m
Widespread Indo-Pacific

Surgeonfish have a blade like spine in the tail that points outwards when bent, unicorns have two hook-like plates along the tail, these are used for defence and are as sharp as a surgeons scalpel, hence the name "Surgeonfish".
Some species are venomous. (edit)

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