My daughter tank has a new hitch hiker that we just discovered. He's about 3/8th of an inch in diameter. Any one care to comment Good or bad let me know. Her tank is a 30 gallon, live rock palys/zoas, pulsing Xenia, Kenya trees, GSP very simple and nice for a nine year old. Ohh by the way she has fallen in love with the little guy but knows if it is bad for her tank it has to go. Thanks for any and all advice. Mike