Swung fish between daughters (7)
I believe the answer is:
dangled
'swung' is the definition.
('dangle' can be a synonym of 'swing')
'fish between daughters' is the wordplay.
'fish' becomes 'angle' (angle can mean to fish).
'between' means one lot of letters goes inside another.
'daughters' becomes 'dd' (a genealogical abbreviation for daughter repeated).
'angle' put within 'dd' is 'DANGLED'.
(Other definitions for dangled that I've seen before include "Hung" , "was on gibbet?" , "suspended" .)