Acanthurus sohal, or Sohal surgeonfish, photographed in the Atlantic Sea Park in Alesund, Norway.
<a href="//commons.wikimedia.org/wiki/User:Ealdgyth" title="User:Ealdgyth">Ealdgyth</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>