<a href="https://en.wikipedia.org/wiki/Signal_Crayfish" class="extiw" title="en:Signal Crayfish">Signal crayfish (<i>Pacifastacus leniusculus</i>)</a> in river Porma, León (Spain). Female with eggs.
<a href="//commons.wikimedia.org/wiki/User:David_Perez" title="User:David Perez">David Perez</a>
CC BY 3.0
<span class="int-own-work" lang="en">Own work</span>