I was hoping you would say that it was only a part of the starfish. I'm not optimistic about the condition that you describe. Starfish are controversial in terms of whether or not they are good candidates for reefs. I personally, from experience, believe that they are and that the negatives that are said about them being impossible to keep are not necessarily accurate. But, still, I believe that they are difficult to acclimate after shipping and it's impossible to be certain that it will make it through that stage in getting from the ocean to your reef successfully. Just recently, I wanted to have a fish store that I frequent hold a Blue Linkia for a week in their tank before I would take it home, after having a bad experience doing otherwise with a Fromia Starfish recently. The response, which was sincere, was that it would have a better chance in my mature reef than in one of their holding tanks. I had to agree, so I took it...so far, so good. But, any starfish is a gamble, so be sure you want to take it before coughing up the dough. If you do decide to take one, make sure that certain measures are taken in the process...most importanly, I think, is using the drip method for about three hours. Also, try to make certain that the starfish isn't taken out of the water for any more than at most, seconds in the process of getting it from the fish store tank to your own reef.