Hi there, I am a newbie here at KoKos and am loving all that I have read. There are some fantastic goldfish on here and so much to learn. I would like to get some beautiful calicos and I went to the store today to pick some up. The calicos there seem to have some greyish film like stuff on them. It wasn't coming off and was thick enough to hide the fish's colour under it. I was wondering if anyone here knows what this is. I have heard that its the fish's natural colour. Its changing colour,it has a disease.....etc I would love to know quickly if anyone knows what this is. Thank you so much umm im not sure how to download the picture either hmmmm