We've all known for years that combining a laser pointer with a cat or dog can lead to hours of fun. They chase it. They get confused when they can't catch it. It's incredibly entertaining.

Who would have thought that you could have the same fun with an aquarium full of fish? If you believed that fish weren't interactive pets, this new video will totally prove you wrong.

Watch as these fish dart all over the tank trying to catch the dot. Now I want to go buy an aquarium!