The wound looks better give time. Keep water clean.Yes I always knew as they’d get bigger I’d have to rehome eventually, I’ve had all my cichlids since they were 1-2 inches so have never had trouble in the tank before this. The grammode hasn’t fought with anyone since the first mark appeared I just didn’t realise it would begin to open up so badly. Hopefully the salt and clean water works it’s magic and I can find him a more suitable home.