OK, like every one says retro are the absolute shyist of all polys. mine NEVER comes out of his flower pot exect at night for a while when its dark. When i turn on the lights, he pops right in his shelter!!!! I've never seen him eat!! The most frusturating thing is, my retro is a friggin killer!! I have to divid him with my other polys cuz he constantly attack them and nips on their tail. a few days ago my retro got to the other side and had a feast on fish tails!!!