I was checking out my rock work and out of a whole i saw 3 arms. Very small but has coloration, they are bash with little black stripes around them, a very light bash though. I have an adult serpent star in my tank. Is it possible that the serpent star made it, there is not mate for it in the tank. or is this something that resembles a serpent star thats smaller that fits this description? Just wondering, it won't come out of its hole so i can really see it. not even at night. any one got any ideas?