very strange, ours just has 5. He is quite the carnivore, and we feed him shrimp. He is a fast mover too. We had to make sure our rock was really stable. My kids love him, he will come all the way to the top of the tank and lay ourwards almost like sunning himself. We think we is actually begging for food. When his stomach does come out and over the food against the glass its
yuck.
have fun with him, we do.