In nature I believe they will not host for the most part (haddoni)(gigantea will mostlikely), but some people would swear to you like they (haddoni+ percula) would pair as they had the pairing and it either happened fast or the haddoni didn't eat them :twitch:. I'm sure tod will chime in on this one, he has/ had a pairing before with a haddoni and his perculas ( and it's pretty awesome ). Good luck and DON'T try to force host them it could end disastrously, especially with a haddoni carpet anemone.