Hello! I have only been keeping fish for about a year. I still feel new to this. A few weeks ago I got a trio of blue moscow guppies and things were going well. I noticed one of the females was flashing a lot on one of the fish that were already in the tank started swimming erratically. All the tests I did seemed fine so I dosed general cure thinking that the problem was flukes. The fish calmed down and all was well again. Within a few days I noticed that the same guppy seemed to be fading in color a little an had a small white spot on her side. I thought maybe the male was stressing her out and maybe she had ich. But I had just done the course of general cure so that didn't seem possible. I let it chill for a few more days and now it doesn't look like a spot it is a white patch with the scales looking like they are protruding from her body. I don't know what I'm doing and was hopeful that anyone might know what I should do next. Please let me know what other info is needed to diagnose this issue.