River fish — pulled in with this? (4)
I believe the answer is:
reel
'pulled in with this?' is the definition.
The definition suggests a singular noun which matches the answer.
'river fish' is the wordplay.
'river' becomes 'r'.
'fish' becomes 'eel' (eel is a kind of fish).
'r'+'eel'='REEL'
Can you help me to learn more?
(Other definitions for reel that I've seen before include "Move unsteadily (like a Scottish dancer?)" , "Totter" , "Stagger with rod winder" , "Fishing rod attachment" , "Photographer's and anglers spool" .)