Rebuke again for soft fish (8)
I believe the answer is:
reproach
'rebuke' is the definition.
(reproach is a kind of rebuke)
'again for soft fish' is the wordplay.
'again' becomes 're'.
'for' is a charade indicator (letters next to each other).
'soft' becomes 'p' (musical abbreviation for 'piano').
'fish' becomes 'roach' (roach is a kind of fish**).
're'+'p'+'roach'='REPROACH'
(Other definitions for reproach that I've seen before include "Rebuke or expression of disappointment" , "carpet" , "Express disapproval or disappointment" , "criticise" , "Upbraiding, censure" .)