Albert Einstein… the Goldfish
“Albert Einstein, a calico fantail goldfish, is not your ordinary pet goldfish. He has learned to take food from his owner’s hand, swim through hoops and tubes, and even put a miniature soccer ball into a goal!
It all started when Kyle Pomerleau, 9, won two goldfish at a school fair. Soon he noticed that the fish would react to his movements whenever he came near the tank. He wondered if they were smarter than he’d realized.”
Well, I certainly didn’t know that you could train goldfish and that is just one story that I found on National Geographics for Kids. If you visit as often as I plan to do, just think how smart you will be by the end of the summer. And yes, your kids will probably enjoy it as well! 
Amazing! I no longer feel guilty about planning to buy my son a goldfish instead of a dog for his birthday.
Good choice unless you want the dog too. A lot less work I’m thinking.