Hint of pink - fish quietly going off? (7)
I believe the answer is:
inkling
'hint of' is the definition.
(I've seen this before)
'pink fish quietly going off?' is the wordplay.
I cannot really understand how this works, but
'fish' could be 'ling' (ling is a kind of fish) and 'ling' is present in the answer.
The remaining letters 'ink' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for inkling that I've seen before include "Slight hint or suspicion" , "Thought" , "Glimmer of understanding" , "Glimmering of notion" , "Slight suggestion or vague understanding" .)