Fishy rhyme for a rake (4)

I believe the answer is:

hake

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'fishy' is the definition.
(hake is a fish)

I cannot understand how the remainder of the clue works.

(Other definitions for hake that I've seen before include "Cod-like fish" , "Common food fish" , "Food fish related to the cod" , "Swimmer" , "Food fish; rhymes with create" .)

I've seen this clue in the Evening Standard.

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