does anyone here have any experience with this fish?? since I am going to be having a large tank for a Jag, that will leave me with an open 55. I looked around at the exodon, and looks like it would be a lot of fun to have a shoal in a 55. Just wondering if any of you guys have had them? I have heard that I would have to have at least 10 or they would turn on each other??