Turned up fish starter, ate and had a smoke (6)
I believe the answer is:
puffed
'had a smoke' is the definition.
(puff can mean to smoke a cigarette)
'turned up fish starter ate' is the wordplay.
'turned' shows that the letters should be reversed in order.
'starter' suggests taking the first letters.
'ate' becomes 'fed' ('feed' can be a synonym of 'eat').
The initial letter of 'fish' is 'f'.
'up' reversed gives 'pu'.
'pu'+'f'+'fed'='PUFFED'
'and' acts as a link.
(Other definitions for puffed that I've seen before include "Wheezed, being swollen" , "Panted, being breathless" , "Breathed hard from exertion, panted" , "Out of breath" , "Blew in short gusts" .)