Aside from how they're bulletproof, I don't know what's appealing about them at all. No personality (unless "kinda mean and nippy" is a personality), no color, no quirks or interesting behavior. Some varieties don't even have any color at all, and the glo-fish versions look downright garish. And whereas neon tetras can be stunning in large shoals, skirts just are not. What in the world is so great about them?