One catching fish in the Rhone? (5)
I believe the answer is:
heron
'one catching fish' is the definition.
The definition and answer can be both animals as well as being singular nouns.
Maybe there's an association between them I don't understand?
'the rhone?' is the wordplay.
'rhone' anagrams to 'HERON'.
Though, I'm not sure how this is indicated.
'in' is the link.
Can you help me to learn more?
(Other definitions for heron that I've seen before include "eg Egret" , "Large British wading bird" , "Wader" , "Large fish-eating bird" , "Graceful grey bird with long neck" .)