Depends on the species of anemone. Some of the nastier species can certainly do in a stomatopod. Several years ago I orderd a couple dozen Haptosquilla stoliurus from an importer in San Francisco. When they arrived, they had no where to put them, so they dropped them into an anemone water table. When I arrived the next day to collect them, there were 3 left. The others had run for cover and were inside the anemones.
Roy