Complain about the fish (4)

I believe the answer is:

carp

I believe this clue is a double definition.

'complain' is the first definition.
(carp can informally mean to complain or whinge)

'the fish' is the second definition.
(carp is a kind of fish)

'about' is the link.

(Other definitions for carp that I've seen before include "ish" , "Raise petty objections about goldfish" , "Fish often kept in ponds" , "Complain continually" , "Pond fish" .)

I've seen this clue in The Irish Independent and The Sun.

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