Fish stocked in ornamental pools (4)
I believe the answer is:
orfe
'fish stocked in ornamental pools' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for orfe that I've seen before include "Fish of carp family; rhymes with quayside" , "swimmer" , "Silvery freshwater fish of carp family" .)