Orangespine unicornfish

Biology

The orangespine unicornfish is named for the two orange spines it exhibits on each side of the base of the caudal fin. These are associated with venomous glands and are used in defence against any threats. Those spines cause deep and painful wounds. This is a quite common species in coral reef areas and it feeds on benthic algae. It is usually solitary but is sometimes seen in large groups.

Curiosities

Like other members of its family, the male orangespine unicornfish is noticeably different from the female: males exhibit a long caudal filament that females do not have.