Depends on the individual fish. Flames are one of the "safer" pygmy angels. I have one now in a LPS/Softies tank and have no problems. I do keep him well fed though. I previously had a coral beauty, another of the "safer" species that would not leave my Trachyphyllia alone. If you have a good LFS that is willing to take one back if it doesn't work out for you, they are worth a try IMHO.
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