Male spawn rash of Adour Minnow (<a href="https://en.wikipedia.org/wiki/Phoxinus_bigerri" class="extiw" title="en:Phoxinus bigerri"><i>Phoxinus bigerri</i></a>). River Arlanza (<a href="https://en.wikipedia.org/wiki/Douro" class="extiw" title="en:Douro">Douro basin</a>), near <a href="https://en.wikipedia.org/wiki/Quintanar_de_la_Sierra" class="extiw" title="en:Quintanar de la Sierra">Quintanar de la Sierra</a>, <a href="https://en.wikipedia.org/wiki/Burgos_(province)" class="extiw" title="en:Burgos (province)">Burgos</a> (<a href="https://en.wikipedia.org/wiki/Spain" class="extiw" title="en:Spain">Spain</a>)
<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>