I have a blue linkia starfish. I just got it 2 days ago. I was unaware that it needed to be acclimated since I only learned it by reading just now. But today I noticed that it was hanging limply on the back of my cave. When I picked up the cave to look at it, it seems like the bottom of one of the legs had almost fallen off or something. It has a few sections of it that is white, and almost look like cuts. Is something in the tank picking at it, or is this a sign that there is something far worse going on in my tank?? What can I do to help it??

Should I take this starfish back to the store?