Atlantic catch (3)
I believe the answer is:
cod
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">atlantic catch</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 cod that I've seen before include "Tasty fish or slangy nonsense" , "A fish; a hoax (slang)" , "Pull the leg of - a fish?" , "Initially, pay when you get the goods" , "Common food fish" .)