Thanks for all the help everyone....unfortunately the rock it is attached to is also the same one these are attached to:
These I am also not sure of what they are although I do like them! This was also taken right after I fed the tank, and they snapped up a few pieces!
I did pick up a peppermint shrimp today in hopes he will eat the bad stuff and if that fails, I will try the AiptasiaX and see if it works...