A new triggerfish,Rhinecanthus abyssus, from the Ryukyu Islands

A new triggerfish,Rhinecanthus abyssus, is described from three specimens collected in the Ryukyu Islands at depths of 120–150 m. It is distinguished from the other species ofRhine-canthus by the combination of the following characters: soft dorsal rays 22–23, soft anal rays 20, a large black blotch around anus, and no semicircular white band on posterior side of body.