I have had a Dwarf ACF for about three months, I kept him with a Beta, which the pet store owner said would leave him alone. He is in with some aquatic plants and has a nice place to hide, the water is warmed by a light near the cage. Recently the frog began floating at the top of the water in a ball, then today I came in and one of its arms was gone!! The frog has been separated into a clean container and is attempting to recooperate. Any advice on aiding healing and what the floating problem was?