I was feeding my tank last night and saw something curious pop out! He was bright green and had two bulging eyes. He quickly darted away but I got a good enough view of him to think Mantis shrimp. Today while feeding he came right out in the open and sure enough he is a Mantis and he is about 2 inches long! Should I keep him, or should I try and trap him and get rid of him? He doesn't seem to have a definate home right now because I have seen him in both sides of my tank. I know he is not good for my inverts but he looks pretty cool. Any advise is more than welcome. Thank you. Tcanova.