Arrange to provide fish at the farm centre (5)
I believe the answer is:
array
'arrange' is the definition.
(I know that array is a type of arrange)
'fish at the farm centre' is the wordplay.
'fish' becomes 'ray' (ray is a kind of fish).
'at' says to put letters next to each other (I've seen this in other clues).
'centre' means to look at the middle letters.
The middle letters of 'farm' are 'ar'.
'ray' after 'ar' is 'ARRAY'.
'to provide' acts as a link.
(Other definitions for array that I've seen before include "Line up" , "Lay out, arrange" , "Deck" , "Significant arrangement" , "Order - arrangement" .)