Check out this mechanical fish that’s guiding a shoal of actual fish across a pool. The fish was designed by New York University’s Poly Dynamical Systems Laboratory, and the developers say that it could one day be used to guide real fish away from man-made ecological disasters.
For now, the fish is powered by a battery and is limited in how it could be deployed. That said, the NYU researchers are hard at work on a power source that would be charged by small vibrations in the water (waves, currents, etc) and could theoretically last for days before a servicing is needed.
Source: Gizmodo.
very smart, I like this robot fish from Japan which swims like a real fish
http://www.japansugoi.com/wordpress/japanese-robot-fish-from-sedensha/