Bony fish
I believe the answer is:
bass
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">bony fish</span>' is the definition.<br/ ><span class="explanation-format__explanation">(bass is a kind of bony fish)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for bass that I've seen before include "Fish for the low-voiced" , "Performer" , "Scottish rock" , "Sea perch - male voice" , "Lowest male singer" .)