I have been going after 2 mantis in my tank, a bluish-green one, and a red/rust colored one. Today, success! Caught them both in less than 5 minutes. I made my own trap out of 3/4 inch clear tubing, about 3 inches long. One end I covered with a piece of nylon stocking. I attached a piece of fishing line to the other end. I put a small piece of frozen food in and then covered that with a small rock to keep it in place. It was time to go fishing then. I lowered the tube's opening just outside the hole where mantis was and he went right in after the bait, and I lifted his clicking A$$ out. Now I am setting up a nano tank with them. I will keep you updated!