I have a red tail gold arowana and i think it is dying. I noticed that its appetite has not been good the last few days and that there seemed to be something wrong with its eye yesterday. But today, one of its eyes has gone red. The liquid, that should be clear, in its right eye has become a reddish-orangish colour (internal bleeding? Stroke?). It is gasping and has lost most of its control over its body. It has sunken to the bottom of the tank, curved with its red-eyed side inwards in a sort of a rainbow shape. Once in a while it gets up to swim, but its tail moves spastically and it twitches from side to side more than swims. It will swim to the top of the tank, stop moving, flip over, and sink, thus going back into its 'rainbow shape' rest position, like an arch on the bottom of the tank. Sometimes it just spazzes and squirms at the bottom of the tank, trying to swim, but it just cant get up. Its getting weaker and weaker. Any idea what is wrong with it? Can i save it?