My balloon belly molly has these weird white spots on her fin. I think it might be ick but I'm not sure. I have never dealt with it before. Would it be better to isolate her so she doesn't contaminate my other fish?? She is in a 20 gallon with cory catfish, hatchetfish, another balloon molly, shrimp, and snails. I also have 2 baby cories that are almost 3 months old and I will be devastated if they die because I didn't act quick enough. Thank you!!!