Is there something like a "Rotten Mouth Disease"? My healthy platy started to get a white rotten mouth yesterday afternoon, in the evening there was no chance for her to move her mouth at all, it looked horrible and then of course she died! I have no idea what this is. It didn't look like mouth fungus to me, it was not hairy at all. And it killed the fish so quickly. I'm concerned about my other fish. I changed 90 % of the water and the filter cartridge. Any ideas
? The other fish seem to be fine so far.
? The other fish seem to be fine so far.
