There is one species called the "Aiptasia Eating Filefish" that may be reefsafe and beneficial in that they control aiptasia populations. I do not know if anyone has seen them nipping at or actually eating corals as well. They are a small species that I believe doesn't exceed four inches.
yeah thats a harlequin filefish and they will feed on sps polyps. also known to be difficult to keep. if you search through back issues coral mag there is a great article on that fish, breeding info, feeding tips ect. best of luck
That fish is starving and is a specialized SPS polyp feeder. They are nearly impossible to keep without weening them off of SPS corals slowly and even then some will always need SPS to survive. They have one of the most dismal survival rates of any fish imported unfortunately.
Acreichthys tomentosus is the aiptasia eating filefish and is a much hardier and better choice in a reef.
I got a pair from Live Aquaria without doing my research. At some aptasia but also ate some zoas. Luckily for me they are growing back. Fish aren't in my tank anymore!
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