Check out this nice picture of asterina starfish eating my SPS coral today. Little buggers. I am rather found of that coral. It has beautiful coloration and great polyp extension. I just don't get it. Although I have had asterina starfish in my aquarium for years, I still am not sure if they are opportunistic or predatory. In this case, I believe they are predatory. That coral has been booming for some time now and rather bullet-proof. Yet last week, I glanced over and smack in the middle was a bone white branch with a starfish on it. The picture below is from tonight and on the lower left branch, there are two of them munching away. Interestingly, the tip of the branch they are on is still green, they appear to be working their way up from the base. It was 9 years ago, when I posted - these pics - when I had some going over montipora. Sigh. Someday I will find some big bongo shrimp to eat them. Do you think they are guilty of decay? What has been your experience with asterina?