Public fighting (6)
I believe the answer is:
affray
'public fighting' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for affray that I've seen before include "Fish; had an odour" , "Disturbance of the peace" , "Brawl, disturbance" , "Breach of the peace by public rioting" , "Fracas, noisy fight" .)