Keeping an aquarium can be a very enjoyable and rewarding hobby. Anyone who has ever tended their own small school of fish will tell you that it’s easy to spend hours doing so, even if you’re just watching them swim around. Unfortunately, aquariums take up a lot of space, which makes them impractical for many people. Miniature specialist Anatoly Konenko has turned things around by creating the world’s smallest aquarium. This tiny fish tank measures 30mm wide, 24mm high and 14 mm deep, and holds just 10ml of water. It even has a built in filtration system to keep the water clean. In fact, the only thing this aquarium is missing is a tiny plastic scuba diver.