I had a problem with majano anemones, another pest anemone, and tried all sorts to get rid of them (same things that kill Aips), but nothing worked. I bought a filefish, and nothing happened for a few weeks...I gave up...then, after about a month I noticed all the majanos had vanished. I've read others had the same experience of filefish too, so I would recommend one. Are they reef safe?...well, I have seen mine take a nip at my acans, so I guess there is a risk, however it seems to mostly leave them alone, and they've been fine since. They're very peaceful, so no probs with other fish.