Robot Fish Powered By Artificial Muscle

x2agent points to this article on yomiuri.com, excerpting: "Start-up companies in Osaka Prefecture have developed what is believed to be the world's first fish robot with artificial muscles capable of reproducing the natural movements of real fish." z2agent writes "I found this article while I was searching for something about robots and thought it was interesting. I was wondering where do you draw the line between 'robots' and 'remote controlled car with a Skil saw mounted to the front' like in Battle Bots?"