Feb 5, 2007 · The discolored patches are not raised and the gills and mouth seem unaffected. Nasty sounding ailment. Good luck with your treatments. I finished the 3rd day of dosing with Quick Cure and have lost 3 of the 5 fish . The 2 survivors don't look any better. So today I will change the water and try a different treatment. Maybe Betamax.