Sweet-smelling fish brought up during loud storm (8)
I believe the answer is:
fragrant
'sweet-smelling' is the definition.
(similar in meaning)
'fish brought up during loud storm' is the wordplay.
'fish' becomes 'gar' (gar is a kind of fish).
'brought up' shows that the letters should be reversed in order (in a down clue, letters go up).
'during' is an insertion indicator.
'loud' becomes 'f' (short for forte - 'loud' in music).
'storm' becomes 'rant' (both can mean to rage).
'gar' in reverse letter order is 'rag'.
'f'+'rant'='frant'
'rag' going into 'frant' is 'FRAGRANT'.
(Other definitions for fragrant that I've seen before include "Pleasantly smelly?" , "bouquet" , "Pleasant to smell" , "Sweet smelling" , "Sweet-smelling" .)