Carp variety (3)
I believe the answer is:
koi
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">carp variety</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for koi that I've seen before include "swimmer" , "sort of fish" , "Japanese fish" , "Large Japanese carp" , "Japanese type of carp" .)