European fish (5)
I believe the answer is:
tench
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">european fish</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for tench that I've seen before include "Fish of the carp family" , "Freshwater fish" , "something fishy" , "Swimmer" , "catch" .)