Striped eel catfish, <a href="//commons.wikimedia.org/wiki/Plotosus_lineatus" title="Plotosus lineatus">Plotosus lineatus</a>. Photo by J. Petersen taken in Manado, North Sulawesi, Indonesia.
Jens Petersen
CC BY 2.5
<span class="int-own-work" lang="en">Own work</span>