I came home today to find my CBS crawling all over my fromia star and guess what, one of the starfish's "arms" appeared to be cut clean off. I have no other livestock in my tank right now as a stupid power outage offed everything else but will the starfish be alright or do I need to remove it from my tank?

well it won't be alright if the CBS keeps choppin it legs off. other than that it should be fine.

Is there enough food in the tank for it? You may want to supplement feedings as your CBS might not be getting enough food and is looking for other options (ie your starfish). Just a thought

cbs are aggressive

your starfish got attacked by an overrated Tv network??? weird!!