Oh, Amy - I hope he/she pulls out of it. I just love my cories and freak when I think something is wrong with one of them. Last week, for a just a second or two, I noticed one of mine swimming weird, then he stopped. My husband said he was doing it just for attention or just to joke with the other cories about (hey look guys, I can really make her freak...watch this).
I hope yours is okay and there's not something wrong with him.
Dottie - I'm Pisces - that explains EVERYTHING! :p