I had one for years that died when a heater malfunctioned and I was out of town. I was so sad to lose that anemone. It was the color of a RBTA. What I learned was that the way to keep it from moving was to provide it with a pvc pipe that had the end piece sealed on with aquarium silicon. If it just had the pvc alone, without the end piece sealed on, it would move. The pvc I found at home depot and with the end piece it was 6 inches long. It was full of fine aragonite. Water flow was moderate. It was located about 5 inches below two 55-watt pc's. Mine would eat silversides, squid, and krill, probably shrimp too, but I can't remember feeding that.