I'm sorry to keep updating you on this bit I care for this fish
I've done a bit of reading and think it might be swim bladder disease or wopsy (I don't know if I spelled that right) how can I tell this apart and/or treat it? I don't want him to die. One of my other fish is really concerned about him and is "kissing" his tail and body.
He has trouble staying near the bottom on the tank and the other fish (except for the other fish who is concerned) stay away. He has also been "shivering" in the past but doesn't do it anymore. He'll float down into the gravel head first, and sometimes fall sideways. Then he'll float back up to the surface and attempt to swim around a little more and float back down. Should I separate him from the other fish somehow? How can I help him?