he was a jumper the whole two years ive had him, his name was jasper. i loved that little guy i had his 200 gallon (which he kept to himself, refused any tankmates) with a two inch think glass cover on top loaded with cement tiles and he still pushed through without breaking the tank, i found him about an hour too late. really put a damper on my week, ive got to plan ahead for my other aros and find some kind of jump proof plan. they seem to get out of anything!