The central Dutch city of Utrecht has installed a ” fish doorbell ” on a river lock that lets viewers of an online livestream alert authorities to fish being held up as they make their springtime migration to shallow spawning grounds. The central Dutch city of Utrecht has installed a ” fish doorbell ” on a river lock that lets viewers of an online livestream alert authorities to fish being held up as they make their springtime migration to shallow spawning grounds. Ecology Phys.org – latest science and technology news stories
A Dutch ‘fish doorbell’ has turned into an unlikely online hit combining slow TV and ecology
