For the last four weeks, I have had an uninvited guest in one of my tanks. It is very camera-shy, but here is a description: fuzzy black, the size and shape of a honeybee, triangular face with big black eyes, stubs where wings "should" be, three pair of clear legs, kind of like a grasshopper's. It sits on plants or clings to stems within and inch or two of the bottom, and I have never seen it do anything like eat, but it moves slowly and frequently. It stays under cover, and I have never seen it go to the top. I have big rosy barbs in there, and I don't know why they haven't attacked it. They kill every pond snail I put in, they devoured big ghost shrimp, and even tried to eat the otos I added (about a month ago, come to think of it.) Maybe the barbs that survived the oto incident learned not to attack strange creatures. Anyone have any idea what this is, and if I will be sorry if I let it live in there?