I see, I was just wondering if anyone tried the PP treatment and if it was effective or not.
I had no idea that organ failure could cause the fins to die like that. I would be more thinking of dropsy or something similar.
Originally Posted by LittleBlueFishlets
Potassium permanganate is an oxidizing salt that is very effective for external issues. However, Mycobacteria often infects the fish internally as well as externally. It's thought (from the little that I've been able to find written about it) that the "graphite" coloration of the fins probably occurs due to tissue death as the internal organs begin to shut down.