Home Counties sailor getting about in the morning for fish (3,5)
I believe the answer is:
sea bream
'fish' is the definition.
(sea bream is a kind of fish)
'home counties sailor getting about in the morning' is the wordplay.
'home counties' becomes 'se'.
'sailor' becomes 'ab' (abbreviation for able seaman).
'getting' is a charade indicator (letters next to each other).
'about' becomes 're' (regarding**).
'in the morning' becomes 'am'.
'se'+'ab'+'re'+'am'='SEA-BREAM'
'for' is the link.
(Other definitions for sea bream that I've seen before include "Fish - seem Arab (anag)" , "Edible marine fish" , "Fish, valued as food" .)