I was at a LFS the other day and I saw the cutest little Angel. What caught my eye, though, was that it seemed to be chasing its tail. It was swimming around in circles. I almost bought it, but decided to watch for a while. It did swim straight some, but mostly just in circles and always the same direction. Do you think there was something wrong with it? I didn't get it that day, thinking I would come back in a week and see if it was still alive. It was...but still swimming in circles. It's really cute to watch, but I don't want to get him if there is something wrong. Any ideas?