I was able to get in touch with a marine biologist who works at my local zoo. He told me while he feels that you've narrowed the genius down that the classification is a (common name) blood starfish here is a page I was directed to and feel that this may provide more insight to what habits these starfish have as well as what they eat:
http://rosamondgiffordzoo.org/assets/uploads/animals/pdf/BloodStar.pdf
http://rosamondgiffordzoo.org/assets/uploads/animals/pdf/BloodStar.pdf


