Despite much reluctance from my mom, I got him. He is emaciated, and has fin rot on all of his fins (dorsal, caudal [severe], anal, ventrals). His caudal is almost gone, actually.
Pet stores piss me off so much. When my mom asked me why I was getting him I said "If I don't, he will die since they don't take care of them" and the lady who works there replied with "Yes we do! They get their water changed once a week!" I so wanted to say "Right. You take such good care of them that their tails rot off". So anyways, I ended up ticking two people off with one sentence!
Maybe I made the employee rethink the blatant animal abuse they manage to pull off.
So anyways, here he is! Let's see what I can do with this bugger, at the moment I'm treating him conservatively with aq salt and lots of good food.