i have a banded sea serpent star, and i love him. i'd definitely recommend having one in your tank. he's pretty reclusive, but extremely peaceful and i love seeing him occasionally come out and scan the top of the sand bed for detritius/extra pieces of food. he's grown quite a bit since i got him, and they're reasonably priced on top of it all...i actually got him at petco
, but he's worked out great and was only $7.99. oh yeah, and he's really good about eating any livestock that dies. saves me digging a corpse out of the tank...