Is my Black Banded Leporinus ok?
 

All he does is swim up and down along the glass looking at his reflection. Should i get another one or is this normal? I've only had him for a few days is he just getting use to being alone or is he just being an normal Leporinus. Any info would be greatly appreciated. Thanks in advance.

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I did a little research just now and a lot of the sources said they prefer to be in large groups. I would assume that's at least 8, and considering these are fish that grow to be 8-12 inches, I don't know if your tank would be able to hold such a group. A more knowledgeable member will give you better advice I'm sure, but when I imagine 8 of those fish in my 55 gallon, the picture I get is overcrowded. And smaller groups are more prone to aggression between each other, so getting him a friend might do you more harm than good. You might want to consider returning him to the fish store.