The Damsel and Mantis actually get along. When I first introduced the damsel I for thought he be food for the Mantis. But as you can see they get along great. They have been together for about 8 months. As for Monty the Mantis, he's a workaholic, always out and about digging a new tunnels, moving gravel from one end to another. And he even knows when I come home, because he waits to be fed. Great critter does'nt try to sper me when i have my hands in tank...