I was just wondering if clowns are ever known to be jumpers? I'm running a 14g biocube and currently have one juvenile(going to be two next week) and I would really like to run my tank rimless/coverless/screenless. The tank will just be the two clowns and inverts so as long as they get along ok should I be fine? From what I have been reading they dont usually jump unless chased by something. That true?