[Freddy]

Computer scientists at MIT have unveiled a new, soft robot fish that can independently swim alongside real fish in the ocean. They call their robot fish SoFi and described the work in an article published March 21, 2018, in the peer-reviewed journal Science Robotics.

More of the story and other links here : http://earthsky.org/human-world/robot-fish-sofi-swims-with-real-fish-mit