Small freshwater turtle (8)
I believe the answer is:
terrapin
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">small freshwater turtle</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for terrapin that I've seen before include "Chelonian reptile" , "Hardback" , "Partner I found for freshwater tortoise" , "Little turtle" , "A reptile; a printer (anag.)" .)