The colour of fresh bream (5)
I believe the answer is:
amber
'the colour' is the definition.
(amber is a kind of colour)
'fresh bream' is the wordplay.
'fresh' is an anagram indicator (a fresh re-ordering of the letters).
'bream' with letters rearranged gives 'AMBER'.
'of' is the link.
(Other definitions for amber that I've seen before include "Cautionary colour" , "Name of female" , "Ornamental fossil resin" , "The traffic-light between red and green" , "gives warning" .)