Originally Posted by Bang Guy
They are Tulip Anemone IMO, they are a very close relative of Mojano but they are not Mojano sp.
They can multiply quickly but have a rather weak sting, unlike Mojano & Aiptasia. Isolating them on a rock will not guarantee they will not spread because they are far more mobile then Mojano and can easily crawl several feet in one night. They are also very easy to remove.
I'd suggest keeping them if you like them but keep the numbers low and remove stray Anemone when you see them. You can remove them using a toothpick or bamboo skewer to lift the foot off the rock.
i beleive they are COLONIAL ANEMONEs' . i have the same ones in that first couple of pics you took, they have a lime green base with those same color tenticals, the ones in this picture are of a different color. and the second pic is a couple of ones i have in my tank