Juvenile Crucian carp (<i>Carassius carassius</i>) from Gelderland, the Netherlands. Young crucian carp are identifiable from carassius auratus by the black spot on the tail.
Piet Spaans (<a href="//commons.wikimedia.org/w/index.php?title=User:Viridiflavus&amp;action=edit&amp;redlink=1" class="new" title="User:Viridiflavus (page does not exist)">Viridiflavus</a>)
CC BY 2.5
<span class="int-own-work" lang="en">Own work</span>