A pale cambodian male Betta (<i>Betta splendens</i>) with red splotches on his fins (weird colour, I've never seen it in another Betta).
<a href="//commons.wikimedia.org/wiki/User:Pharaoh_Hound" title="User:Pharaoh Hound">Pharaoh Hound</a>
CC BY 2.5
<span class="int-own-work" lang="en">Own work</span>