I'm still a newbie so I don't know much about this condition. It definitely looks very odd. Are they eating and swimming? Can you show the photos to your local pet store for help? I know the fish disease, ich, consists of white dots on fish. I brought home a balloon molly with that and gave it to my other fish, but it was treated with the API ich treatment and it went away. However, a balloon molly died 2 days later, sadly. I don't know if it was because of the treatment, and it wasn't the molly with the ich problem. Are you sure these are mollys? Never saw them before. It would be nice if this board was a bit more active.