Dalmatian Platy Lost Spots
I purchased a female Dalmatian Platy about 6 months ago. She's been relatively healthy, aside from having a minor case of ick about 2-3 months ago (been treated). She was pregnant when I bought her, and the fry is doing very well considering it was her only fry.
I chose her specifically because she had a lot of spots, however, in the short time that I've had her she's turned completely black.
Is this a normal process due to aging, or could she be sick?
I tried searching this on google, but I couldn't find anything...