Fish bite and people expect results, initially (7)
I believe the answer is:
snapper
'fish' is the definition.
(snapper is a kind of fish)
'bite and people expect results initially' is the wordplay.
'bite' becomes 'snap' (I've seen this before**).
'and' means one lot of letters go next to another.
'initially' says to take the initial letters.
The initial letters of 'people expect results' is 'per'.
'snap'+'per'='SNAPPER'
(Other definitions for snapper that I've seen before include "Fish; photographer" , "Person photographing" , "sharp-toothed fish" , "Fish; marine turtle" , "(Often red) food fish" .)