How to bring in a small river fish? (4)
I believe the answer is:
reel
'how to bring' is the definition.
I can't tell whether this defines the answer.
'a small river fish?' is the wordplay.
'a small river' becomes 'r' (abbreviation for river; 'small' indicates a short form).
'fish?' becomes 'eel' (eel is a kind of fish).
'r'+'eel'='REEL'
'in' is the link.
Can you help me to learn more?
(Other definitions for reel that I've seen before include "Fishing rod attachment" , "Stagger around in the dance" , "Totter" , "Air" , "Show astonishment" .)