white brittle stars

[Blaster]

or serpant stars were on and hiding in my maxima,they are out now i think, but the clam isn't looking to stellar.Should have i been concerned about those pests.THe clam was starting to pinch

 

[acroporas]

I would bet that the are eating decomposing flesh. Clams tend to start decompsing and attract detritivores before they are completely dead. I would say this is a very bad sign but it isnt the starfish's fault.