Glass catfish (<i>Kryptopterus vitreolus</i>) –
Aquarium de la Porte Dorée, Paris, France.
<a href="//commons.wikimedia.org/wiki/User:KoS" title="User:KoS">KoS</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>