Swimmer with taste, and a way of putting the boot in! (6)

I believe the answer is:

bonito

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'swimmer' is the definition.
(bonito is a kind of fish)

'taste and a way of putting the boot in' is the wordplay.
'boot in' can be anagrammed to 'BONITO'.
But, I'm not sure how the anagram is indicated.

'with' is the link.

Can you help me to learn more?

(Another definition for bonito that I've seen is " Fish".)

I've seen this clue in the Evening Standard.

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