I know many will find this ridiculous but is there someone who can diagnose and treat my goldfish? He has been with our family and our only pet for nearly four years. After returning from being away a couple of days for thanksgiving he was not swimming like normal and after looking at him more closely today he has a layer of white something lining his beautiful fins. He was only $0.32 but I love him and will pay someone to help him :( Any recommendations?