Entrance fish caught playing (9)
I believe the answer is:
portrayal
'playing' is the definition.
(I know that portrayal is a type of playing)
'entrance fish caught' is the wordplay.
'entrance' becomes 'portal' (type of opening or entrance).
'fish' becomes 'ray' (ray is a kind of fish).
'caught' means one lot of letters goes inside another.
'portal' placed around 'ray' is 'PORTRAYAL'.
(Other definitions for portrayal that I've seen before include "Representation" , "Imitation" , "Study" , "painting" , "Artistic depiction" .)