what species of Starfish/snail/sand sifter of any sort?

[4lti7ude]

Originally Posted by Fishward

I did have a lid in place for thelast one but after grazing for 20 minutes, it jumped into it. Looked really stunned, disappeared into the rock andeas never seen again. :-(

Sounds to me like your glass top worked then.
Fish bonked his head, but he probably learned his lesson.
If hes still in your tank, id give him a few days to see if he comes out.
From what you said, it doesnt sound like he did anything to really be taken out yet.

Sand sifter star fish will burrow themselves in your sand all the way at the bottom and starve to death when there is no more food in your sand. A high risk of poisoning your tank with a rotting starfish buried somewhere at the bottom.
I used mine for a week or two then returned him after he cleaned up. Only was $10.00 to.