Also known as Bignose Unicorn, Bignose Unicorn Tang, Big-nosed Unicornfish, Blue-lipped Unicornfish, Doctorfish, Lancetfish, Scibbled Unicornfish, Thorntail, Thorntail Fish, Vlamingii Tang, Vlaming's Unicornfish, Zebra Unicornfish.
Found singly, pairs or in small schools sometimes congregating in large caves during the day or over deep drop-offs of lagoons and seaward reefs.
They feed on zooplankton.
Adults change all the time from pale to dark.
Juvenile's are a dingy green with blue lips and spots later changing to a bluer fish with purple markings. However while the fish sleeps, or is frightened, it turns a muddy brown as camouflage.
These fish love to play in divers bubbles!!
Length - 60cm
Depth - 1-50m
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. Ref: https://www.fishbase.se/summary/Naso-vlamingii