I'm sorry to say that your fish probably isn't going to survive. Fish that have been breed as not naturally occuring fish, such as your blue parrot, often don't live as long as the naturally occuring fish of the same species such as the red parrot as they are man made. In this case, your blue parrot has been breed differently, and has either been dyed to change the color, or breed through other blue parrots. Fish that aren't normally naturally occuring have a decreased immune system and an over decreased amount of hardiness. For example, the golden gourami is a naturally occuring fish, and is very hardy as opposed to the man made fish the flame dwarf gourami. Flame dwarf gourami's have been man made, and whilst gourami's are relatively hardy fish, the flame dwarf doesn't live up to this as it has been created based on the 'real' gourami's. So therefore, your blue parrots immune system is not as strong as the naturally occuring red parrot's, and you need to be very careful if you choose to leave it in your tank as by the sounds of it your fish has what is called dropsy. Dropsy is where the fish loose their ability to swim and often lay upside down, they have short bursts of trying to swim, but often just float back down to the bottom of the tank. Once they can no longer swim, it generally means that it is irreversible. You won't be able to do anything to help your fish now, but you should remove it from the tank before any of your other fish get sick otherwise you'll be risking a mass death in your tank. Dropsy is an internal bacteria infection that causes fluid to build up in the fish cavity, preventing them from functioning normally. It can be treated with API's melafix and/or pimafix, but your fish's case is too far advanced for a recovery. You need to be very careful when buying fish that are naturally occuring, and you never, ever buy a fish that is ill, or has other ill fish in the tank, or even dead fish in the same tank as moving homes causes the fish stress. Stress lowers their immune systems making them more susceptible to diseases, epsecially man created fish.
