Unicorn leatherjacket

The unicorn leatherjacket (Aluterus monoceros) is a filefish of the family Monacanthidae, found around the world in subtropical oceans between latitudes 43° N and 35° S, at depths down to 50 m. Its length is up to 76 cm.

Behavior
This species exhibits distinct pairing. Adults may form schools under weed rafts.