Fish comes in for craftsmen (10)

I believe the answer is:

carpenters

'for craftsmen' is the definition.
(carpenter is a kind of craftsman)

'fish comes in' is the wordplay.
'fish' becomes 'carp' (carp is a kind of fish).
'comes in' becomes 'enters' ('enter' can be a synonym of 'come in').
'carp'+'enters'='CARPENTERS'

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