Salty little fish (7)
I believe the answer is:
anchovy
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">salty little fish</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for anchovy that I've seen before include "Brit often found pickled" , "Small salty fish" , "Small fish, may be served with toast." , "Small edible fish" , "Strong-flavoured fish" .)