All I have to say, is stay away!! They are very hard too keep!! You can tell one is healthy if it is stiff, once is goes limp it's a goner. Anyways I had one, ordered it from this site and my water was awesome, the darn thing only lasted a week, one day I look in the tank and there was this brown stuff under it, I wondered what the heck, so I poked it with my graber for the tank, and it was limp, I lifted it out and it was rotting away........ and holy cow did it smell. Well then my Regal Tang got ich for the first time, probably because the starfish was rotting in the tank. Anyways, no more blue starfish for me. My tang is fine now and everyone is good. Go with a green brittle star, I hear those are pretty hardy and come out more than the regular black ones.