Anyone have one that doesn't like to stay in the tank? We just got it today, he ate in the store and again at dinner and seemed happy and well adjusted to the tank. Then my wife looks and says wheres the clown, either good or bad luck landed it behind the tank so I had to pull the insulation out. It had to flop for ? before we noticed/got to him but it beat the cat seeing it first.

Long question short anyone else have a problem with them jumping out?
Clif