I'm not really up to par on the zoa/paly lingo, so can you tell me what "PE" means? I'm trying to figure out their name in case I want to frag them off in the future, but that may be forever from now. I've had them a few months and there's only three. The guy that I got them from (Chris - Reef Koi out here in Colorado Springs) didn't even know what they were.