Cautious fish comes to sticky end (5)
I believe the answer is:
chary
'cautious' is the definition.
(similar in meaning)
'fish comes to sticky end' is the wordplay.
I cannot really understand how this works, but
'fish' could be 'char' (char is a kind of fish) and 'char' is present in the answer.
A single letter 'y' remains which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for chary that I've seen before include "cagy" , "Cautious, wary" , "Cautiously reluctant" , "Circumspect" , "Careful" .)