This new creature is a step beyond anything already included in this awesome aquarium recreation. The Lionfish will have moving mouth and gills, as well as the independent movement of the grand, but poisonous pectoral fins. Even the Lionfish's behavior will be uniquely different from the other fish in the tank. Like the regular fish in the Aquarium, you may select as many of the Lionfish as you wish, so you could fill the tank to capacity with Lionfish!