Coral Croucher, Caracanthus unipinna (Gray 1831)

A Coral Croucher, Caracanthus unipinna, from Kouaku, Gambier Islands, French Polynesia (27 mm SL). Source: Jeffrey T. Williams / Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes. License: CC BY Attribution-Noncommercial-ShareAlike