Fish-and-chips fish (3)
I believe the answer is:
cod
'fish-and-chips fish' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for cod that I've seen before include "A white fish" , "Initially, pay when you receive the goods" , "One caught in the deep maybe" , "to be paid for when it arrives" , "faked" .)