Actually I had three pet fish without even knowing it. One day I went to school and during the day my mom found a dead beta fish on the side of my desk. She re-bought a fish with the same color and I never knew...
I once had a fish named Oreo who was black and white, and then this nasty tiger fish that I also had ate his fins. We flushed the tiger fish down the toilet because we found out he was the cause of some of the other fish's deaths. Oreo died soon... and I was so sad! But that was like 5 years ago.
You have a pet rock...that's AWESOME!!!!!! I used to be obsessed with collecting rocks, painting them, giving them eyes, and then naming them. I had nearly a hundred of them.