Bloke eating very soft fish (5)
I believe the answer is:
guppy
'fish' is the definition.
(guppy is a kind of fish)
'bloke eating very soft' is the wordplay.
'bloke' becomes 'guy' (I've seen this in another clue).
'eating' is an insertion indicator.
'very soft' becomes 'pp' (musical abbreviation for pianissimo).
'guy' placed around 'pp' is 'GUPPY'.
(Other definitions for guppy that I've seen before include "Small fish of northern South America and the Caribbean" , "Small bright WI fish" , "Aquarium fish" , "Tank occupant" , "Tropical fish" .)