Ornamental carp (3)
I believe the answer is:
koi
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">ornamental carp</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 "sort of fish" , "Sort of carp" , "swimmer" , "Japanese type of carp" , "Ornamental carp variety" .)