For a while, I've had just two albino cories in my tank, but I recently added a third so as to complete the trio. However, the newbie won't school with the other two, and he spends a lot of his time swimming around a couple inches above the bottom (swim bladder problems?). I'm getting kind of worried about him; I don't know what might be the problem.
hmmm, iv seen corys who dont "fit in" or are a bit anti social, it userally doesn't last long, but the swimming thing is puzzeling iv nvr had a cory with swim badder so i dont think i can help you my albino is very friendly, eats fom my hand and loves my female bronze cory, they've even mated
good luck i hope your fishy get better
It's not unusual for a cory to be upset by the change of tanks and take a little while to adjust, although usually they do welcome a chance to make new friends.
If the fish has been injured during transit, or while being netted, and developed a swim bladder problem as a result, it is usually characterized by spinning and loss of control. If yours is only swimming above the bottom, it's nothing to worry about unless there are other symptoms as well.
iv nvr had a cory with swim badder so i dont think i can help you 
