[Carmen]

Thanks everyone. Did not come out for food again tonight so I am guessing he's not with us anymore. Time will tell and I will check ammonia, nitrates daily. He has jumped twice before but was found both times before it was too late. I actually have a cover and he twice jumped into the overflow through a 1"gap (he is actually quite large) then flopped around on the eggcrate cover over the overflow enough to flip himself onto the "lid" and over the edge of the tank. That some crazy acrobatics (and determination)! Perhaps this time he "escaped" and the dog got him? Will watch the sump incase he's hiding down there as well.