Zweifarbenschleimfisch (Ecsenius bicolor)
by Randall, J.E., [CC BY-NC 3.0 (http://creativecommons.org/licenses/by-nc/3.0)], via www.eol.org
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by Mark Rosenstein, [CC BY-NC-SA 4.0 (http://creativecommons.org/licenses/by-nc-sa/4.0), via www.eol.org