Fish steak, battered? (5)
I believe the answer is:
skate
'fish' is the definition.
(skate is a kind of fish)
'steak battered?' is the wordplay.
'battered?' indicates an anagram.
'steak' anagrammed gives 'SKATE'.
(Other definitions for skate that I've seen before include "Ice-rink shoe" , "Runner" , "move around ice" , "Large edible ray" , "Fish; ice shoe" .)