$200 Robo-aquarium that lets FISH drive themselves around

It could give your fish a new lease of life - and allow them to explore the world outside their aquarium. A team of Dutch researchers has developed a remote control aquarium on wheels that fish can steer themselves, and is set to start selling it. Called fish on wheels, the $200 gadget uses a camera to monitor the direction the fish swims in. The prototype version of'Fish on Wheels' was constructed using a standard webcam, and an Arduino, a tiny comuter, controlled robot vehicle. Using the contrast of the fish with the bottom of the fish tank, its position is determined and used to send commands to the Arduino computer control board to move the car into that direction.