In the tangled reeds I live (6)
I believe the answer is:
reside
'live' is the definition.
(I know that reside is a more specific form of the action live)
'in the tangled reeds i' is the wordplay.
'in' means one lot of letters goes inside another.
'the tangled' indicates anagramming the letters.
'reeds' with letters rearranged gives 'resde'.
'resde' placed around 'i' is 'RESIDE'.
(Other definitions for reside that I've seen before include "Occupy a place" , "Live (in a place)" , "Dwell permanently" , "Live in permanently" , "Stay - desire (anag)" .)