well I read some famous reefers claims that small Regals are 'safe' with most LPS/SPS...which is true to a certain extent cos' he doesn't nip on my hammers, torchs, frogspawns, bubbles, zoos, stars-polyps, clove-polyps, mushies, clam, softies, merletti, favias, cup, pineapple corals..except the juicy meaty pratas ! Sigh...$$$ went down the 'overflow pipe'.