I came down to look at my tank today, and my Coral Beauty Angel is swimming sideways at the top of the tank with what sorta looks like a webbing around her/him. I don't know what happened, just last night it was swimming perfectly fine. I also kinda new at this, so any help is needed. My dad thinks it is going to die today, so this is URGENT!
For fish in there I have: 2 three stripe damsels, 2 blue damsels, Foxface Rabbitfish, teardrop Butterfly, 2 ocellaris clownfish, a sharknose goby, and a turbo snail. HELP!!