Help Poorly Fish

That definitely sounds like dropsy, especially as the scales are sticking out. Do you have eSHa 2000 or any other medication which claims to treat this or bacterial infections? If so, then I would treat the fish in a separate tank (NB take any carbon out of the filter if you do this). From personal experience, though, moving a fish to a small bowl/container without a filter in it won't keep them alive for long (a few hours at most), so if you don't have a spare filter for the hospital tank, I'd leave the fish in the main tank as my understanding is that dropsy isn't contagious.