I've seen some really fantastically colored ones online and I'm actually looking to get another one or two myself. I currently have one just like the one you have pictured and love it. In a year and a half, it's never moved and is always wide open. I used to feed it at the same time that I would feed my BTAs, but I stopped months ago without any apparent ill effects. Never had any problems with fish, but just like any other coral or nem it needs its space. Generally seems much less finicky about placement and easier to keep than the BTAs.