I left on Thursday 6/29 to head down to Cape Cod for the 4th of July weekend. I did my general maintenance and feedings before i left. My wife came home on 7/1 to work. She fed the tank, checked everything and then left again. All the fish accounted for. We both returned home on 7/4 and my male hump head geo was gone. He was about 4". I looked everywhere, in the overflows, in the sump, on the floor, under the hood, literally everywhere, there is no sign of him or his remains. My questions is, would a silver arowana about 12" long and 2 Rays be able to polish off a body of that size leaving no remains behind?