Have A sick platy that I have no idea what she has. Alot of the diseases sound too similiar. Have had her about 3 months along with another female and a male. The other female died not long after we had her dont know how she just disapeared under a ornament we had. The female thats sick went on to have about four batches of babies since we had her. Tested water its fine. Its a thirty gallon with other community fish in it no one else is sick. The symptoms she has are heavy breathing, not eating, open mouth,white slime on her body,fins tearing away, and now looks like red areas on both sides of her body. Has been sick about a week.Put Coppersafe from mardel in tank a couple days ago, and she just seems to be getting worse, any ideas on what it is and what else to do.