Simian takes a fish around English lake (7)
I believe the answer is:
apelike
'simian' is the definition.
(I've seen this before)
'a fish around english lake' is the wordplay.
'fish' becomes 'pike' (pike is a kind of fish).
'around' means one lot of letters goes inside another.
'english' becomes 'E' (abbreviation).
'lake' becomes 'L' (geographical abbreviation).
'e'+'l'='el'
'pike' placed around 'el' is 'pelike'.
'a'+'pelike'='APELIKE'
'takes' acts as a link.
(Other definitions for apelike that I've seen before include "anthropoid" , "Simian" , "resembling some mammals" .)