Recalled wetland where leftwing brother got fish which he's devouring (8)
I believe the answer is:
gobbling
'devouring' is the definition.
(thesaurus)
'recalled wetland where' is the wordplay.
'recalled' says the letters should be written in reverse (to recall can mean to bring something back).
'wetland' becomes 'bog' (I've seen this in another clue).
'where' becomes 'bling' (I can't explain this - if you can you should give a lot more credence to this answer).
'bog' written backwards gives 'gob'.
'gob'+'bling'='GOBBLING'
'leftwing brother got fish which he's' is the link.
This may not be correct. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for gobbling that I've seen before include "Eating food like a turkey?" , "Taking fast food" , "Cramming" .)