Parent caught fish (5)
I believe the answer is:
raise
'parent' is the definition.
(synonyms)
'caught fish' is the wordplay.
'caught' shows a homophone (sound like) (to catch something can mean to hear it).
'fish' becomes 'rays' (I've seen this before).
'rays' is a homophone of 'RAISE'.
(Other definitions for raise that I've seen before include "cairn" , "Lift - increase" , "Lift; (to) levy (money)" , "Aries (anag)" , "Amplify" .)