Small bird in cosy place with fish (8)
I believe the answer is:
nestling
'small bird' is the definition.
'nestling' can be an answer for 'bird' (I have seen 'Young bird' mean 'nestling' so perhaps 'bird' could also mean 'nestling'). I'm not certain of the 'small' bit.
'cosy place with fish' is the wordplay.
'cosy place' becomes 'nest' (I've seen this before).
'with' says to put letters next to each other.
'fish' becomes 'ling' (ling is a kind of fish).
'nest'+'ling'='NESTLING'
'in' is the link.
Can you help me to learn more?
(Other definitions for nestling that I've seen before include "Settling in comfortably, against someone perhaps" , "Chick" , "Young bird not yet fledged" , "Young bird - snuggling" , "in a huddle" .)