Fish from deep (4)
I believe the answer is:
bass
This clue is a double definition.
'fish' is the first definition.
(I've seen this before)
'deep' is the second definition.
('bass' can be a synonym of 'deep')
'from' is the link.
(Other definitions for bass that I've seen before include "bottom of sound?" , "Large percussion instrument" , "Fish for the low-voiced" , "Very low - perch" , "Low singing voice" .)