Long story short. 270g tank and the fish is about 12" and had it for a several months. Was doing 25% water change every week or two weeks. Looked like it was having fin rot on the tail. Treated it with Melafix and left the cover open a couple inches. Fish jumped out for no longer than 5 minutes. Pretty much looked dead but came back to life. Now white fungus over gills and eye area. It's been about 1 1/2 weeks treating with Melafix and Pimafix and did a 50% water change. Fish is starting to eat pellets but it can hardly see. Pretty sure it's blind in one eye. Do I still treat it with medicine or just water changes? What's the recommended thing to do with a fish this bad?
This is the good eye
This is the bad eye
This is the good eye
This is the bad eye