Robotic sea bream from the University of Kitakyushu 

Engineers at the University of Kitakyushu have developed an underwater survey robot that looks good enough to eat. “Tai-robot-kun,” a 7-kilogram (15.4 lb) robotic sea bream (red snapper) with a silicone body covered in realistically hand-painted scales, features a unique propulsion system that allows it to move its tail and drift silently through the water like a real fish. Second video after the jump.

A robotic fish developed by scientists from Essex University is put through its paces in a special tank at the London Aquarium. It works via sensors and has autonomous navigational control.

Biologically inspired by the common carp, the new designs can avoid objects and swim around a specially designed tank entirely of their own accord.

This new kind of cyber-fish took three years to develop, by a team of scientists from Essex University.

Future generations may be used for seabed explorations, detection of leaks in oil pipelines, or even as spies.

Although robotic fish have been investigated for the last 10 years or so, the creators of the new models claim theirs are the smartest yet.