Pet Safari in Cabot just got in two carpet anenomes. They have a Gigantea and a Haddoni. Haddoni is a nice size and is fully opened in their tank. Gigantea is attached and looks healthy. If I thought for one minute that I could keep that Gigantea alive, it would be in my tank already. Go get 'em gang.
That's one of the reasons I didn't cry too loud when the one from the tank I purchased died. That said, they are gorgeous. The gigantean they have is probably 8 inches the Haddoni is larger. The mouth on the Haddoni was opened and expelling waste. Large enough for a small to medium fish to be swallowed with.