I have two female black mollies and three 6 week old fry in a 55 gal
freshwater aquarium with a variety of other smaller fish all doing very well. However, one of my black mollies has a silver coloration around her gills and on her belly. As far as I know she's always had some silver on her (I've had her about two months) but it seems to be spreading. She appears to be healthy and eats like a molly should, but this silver on her has me concerned. Does she have some kind of disease, should I pull her out? Any insight would be great.