Fish musician? (9)
I believe the answer is:
trumpeter
This clue could be a double definition.
'fish' is the first definition.
The definition and answer can be both animals as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'musician?' is the second definition.
(trumpeter is a kind of musician)
Can you help me to learn more?
(Other definitions for trumpeter that I've seen before include "Elephant perhaps" , "One touting own skills perhaps" , "[SOMETHING FISHY]" , "Perhaps Nellie" , "sends out signals?" .)