We are planning to get some. While waiting for enough aiptasia to grow we got some aiptasia eating filefish. They ate all of it. They are really slow moving interesting fish and have become some of my favorite. I've read they can eat coral, though. They haven't done that in our tank, but probably wouldn't recommend them for a reef tank. My favorite thing for aiptasia if you don't want to have to get fish is just calcium mixed up and squirted into their mouths. I'm still interested in getting berghia's at some point, though, if we can keep enough rock covered in aiptasia in a separate tank with them alive for eating. We are trying to grow some aiptasia in our garage tank to see how much we can accumulate before getting the berghias.