Also known as Doctorfishes, Lancetfishes, Vlaming's Unicornfish, Vlamingii Tang, Bignose Unicorn, Bignose Unicorn Tang, Big-nosed Unicornfish, Scibbled Unicornfish, Blue-lipped Unicornfish and Zebra Unicornfish.
Found in schools along inner and outer reef slopes and walls. Sometimes congregating in large caves during the day.
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!!
They feed on plankton and algae.
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.