I just noticed yesterday that my mandarin had a white sore on its back. He is eating fine (actually just started eating frozen), plenty of pods around, he is still hunting like normal. The only fish I have in my tank are 2 ocerlaris clowns and the mandarin. I have a BTA, I was wondering if maybe he was stung by it or something. Or maybe it is some kind of disease. Can anyone help me out indentifying this?
