#ick

Hey all, I need help ASAP. I got permission to clean and take care of my boyfriends parents fish tanks. The one I need help with is a 55gal freshwater tropical mixed tank. With angels, Cory's, plecos, tetras, and other fishies I'm not sure what they are, and a snail. Everything has been going...

A couple months ago my sister in law bought a betta, Galaxy, he was doing great always swimming, his fins were great, very active and would eat well. She noticed a white spot that we treated as ick, but I also noticed how horrible the back fin looks and his scales are losing color. Hes a lot...