Must be beginner's luck. But I caught the mantis that came with my live rock. I pulled the rock out where I saw him poke his head out of a hole. As I was doing that, I saw him slip under the rock next to it. I pulled that one out. I saw him slip under the rock next to that one. Well, unfortunately for him, he ran out of real estate and is now residing by himself in a 10 gal tank I had set-up. He's a bright green and only about an inch in length. What should I be feeding him and how often? Will mysis shrimp work? I'm trying to see if a friend at work will want him. If not, I guess I will keep him.