China's New Robotic Fish That Could Be Used For Underwater Surveillance It looks like a golden arowana, but it's the BG-5, a 3kg underwater robot by Boyagongdao. It operates about 16 feet down at roughly 1.3 mph. Instead of a propeller, its tail has flexible joints that move like a real fish, pushing water back to swim forward. It detects obstacles and changes direction on its own. That makes it useful where bigger drones struggle: narrow waterways, shallow inspection zones, places you'd rather not send a diver. Multiple units could eventually work as a group for inspection or monitoring. Despite the "spy fish" buzz online, there's no public evidence this one's been used for spying. Share this with someone who loves weird tech. Save it, this one's wild. #RobotFish #China #chinaai #Robotics #TechNews