What does a starfish eat?

Thanks for all the replies, I don't know that I can do anything to save this one but it will definately help if I ever try this again.

I removed him from the tank last night ( actually had to break a great piece of LR to get him out of a crevice) because I thought he was dead but when I put him in a bowel he moved around and flipped back upright so I dropped him back in the tank just to give him a second chance, so I guess the next question I would have is if he dies would it crash my tank and how fast?

 

It's going to boil down to how much water you have in your system. The more water you have, the more room for error. Of course size & what has dies plays a major key. Some things are A LOT more toxic than others.

But, lets not write off the poor little guy just yet. Have you tried to give him some uncooked shrimp or even perhaps a piece of uncooked crab, like a small leg that you crush up a little?