Whitemargin Unicornfish

Scientific Name: Naso annulatus
Family: Surgeonfishes - Acanthuridae
Maximum Size: 100cm
Identification: Olive to brown, but capable of rapid change to pale blue-gray, white lips, tail darkish with white fin rays; adults have long tapering horn on forehead.
Favourite: Form small schools.
Hide-out: Steep outer reef slopes in 20-60m.
Location: Indo-Pacific - E. Africa to Indonesia, Micronesia, Hawaii and Polynesia. S.W. Japan to Great Barrier Reef and Lord Howe I.