I bought three male guppies yesterday, and it appears that one of them has Ich. There is only one spot of it so far, and it is located on the fish's caudal fin. I've never had any problems with Ich before, and I was wondering if perhaps this disease would cure itself. I've done treatments in the past and they only seem to kill my fish. I also have a shrimp in my tank, and I'm not sure if it would survive a treatment.
What should I do?
What should I do?