Orange-spine Unicornfish (Naso Lituratus): So called because of the bright orange defensive spine scalpels on its tail, the Orange-spine Unicornfish is seen often in the shallow inner Lagoon and the Reef Crests. Just to confuse matters some fish books call it the Yellowkeel Unicornfish. No matter. The thing to remember is it's the one that looks like Elvis Presley with yellow hair. It has a yellow-edged black mask extending from eyes to snout, a mouth that looks like it has applied lipstick and a black and yellow dorsal fin. A 45 cm grey body and a white tail edged in black complete the ensemble.