My RTBS has a spot on the side of the body, looks like fungus, a white patch, is eating through the skin. I am treating with Maracyn, any other ideas??
RTBS?
The rapidly spreading skin erosion sounds like Saprolengia fungus, here is a picture, malachite green or forma-green is the most effective treatment. Warning, the meds are very hard on scaleless fish like loaches and corys. Bacterial ulcers usually have raised reddish borders and a yellowish exudate.