Trick Greek character taking seafood (6)
I believe the answer is:
scampi
'seafood' is the definition.
(I've seen this before)
'trick greek character' is the wordplay.
'trick' becomes 'scam' (I've seen this in other clues).
'greek character' becomes 'pi' (letter from the Greek alphabet).
'scam'+'pi'='SCAMPI'
'taking' acts as a link.
(Other definitions for scampi that I've seen before include "Prawns, usually fried" , "Type of seafood" , "sort of seafood" , "Cooked Norway lobster" , "Fish dish, often in rings" .)