That was a great read, thanks for sharing! I have three cannibalistic (yes, cannibalistic) goldfish that bite each others' fins off
My mom likes to think that I trained them to do tricks, however, because once they see the white bottom of the food container come over the bowl, they start jumping out of the water and "blowing" air bubbles beneath the surface of the water.
By the way, if anyone is interested, I've got three goldfish that I'm willing to give away. They are feeder goldfish that change colors from black to orange to white on occasion (depending on how much sunlight they get). I have an odd feeling that they can survive just about anything....