Yea, my old fish killed themselves too... thanks to my mother insisting I leave the top of the tank off when we left the house. I wanted to leave it on. When I came back there was fish and food everywhere. How they jumped high enough to hit the food is beyond me.

Anyway, I'm thinking about getting a small (3-10) gallon tank and putting a few in there. I want to get more than one kind if I can, as I think it's more interesting that way.