Sprat (8)
I believe the answer is:
brisling
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">sprat</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for brisling that I've seen before include "Small fish of the herring family" , "Sprat sold in a can" , "Swimmer" , "Norwegian fish" .)