I guess it's a bit late to reply to this post, but I have an Anemone Hermit Crab. I didn't buy him from here, but from my LFS and he had 2 anemones on him already. He has a third growing on the bottom of this shell next to his mouth. He had multiple little ones around that one and one up near his eye on the rim of this shell, but it disappeared, maybe he ate it? lol.