Fish ID: Bignose Unicornfish

Surgeonfish bignose unicornfish naso vlamingii pal blue phase
Family Surgeonfish (ACANTHURIDAE)
species Naso vlamingii
size To 55cm
locality Outer reefs and slopes
behaviour In groups often feeding in mid-water

Can darken or lighten colour, but typically blue body with yellow head and distinctive bar from eye to eye across the nose. Filaments on the tail.