Your son is adorable, learning. You are blessed.
My sad fish story: When I was 10 I FINALLY got a fish tank and two fish (can't remember the variety, just that I got them at Walmart which might account for the sad part of the story). Anyway......came home from school one day to find they had apparently committed suicide by jumping out of the tank. I was devastated but always suspected one of my brothers might have helped them along.
