Noted at we make money not art: Vehi­cle piloted by a fish:

Seith Weiner has cre­ated a vehicule piloted by a fish and pro­pelled by 2 drive wheels, each dri­ven by its own ser­vo­mo­tor. The fish steers the ves­sel by its move­ments. A cam­era above the cock­pit tracks the move­ments of the Ter­ra­naut (that’s the name of the fish-​​pilot). Its loca­tion is then wire­lessly trans­mit­ted to a remote pro­cess­ing sta­tion where the data is con­verted into motion com­mands and trans­mit­ted back to the motion con­troller of the vehicle.