I have an albino rainbow shark and he's not doin so hot. I had him in my 45 gal tall tank thinking he'd be at the bottom with my yoyo loach away from my 2 angel fish, but instead he stayed up at the very top hugging the surface and didnt like to swim much. He would rest his body on the suction cup to my heater. (Which isn't on.) The angelfish were all of a sudden being bullys ive never had this problem and he got to the point he was barely swimming and starting to go sideways. so I separated him with a breeder net to keep him safe thinking it'll help him get better. And it seemed to work but now he won't eat and he barely twitches his tail to move. What should I do? I really don't want a different one I like him lol. Is he just doomed?