When in the channel, in the lower part of the system, fish with needs or intentions of lift or rise are detected, the operator, in person or remotely, will act on the generator to change its operation to that of an engine, performing the stoppage of the screw and the change of direction of rotation of the same in the sense of clockwise or clockwise direction. In this way the upward movement of the water and the fish that are resident in it occur. This pumping of water with fish is for them a transport similar to the one that the escalators suppose for the humans. In the prototype of design that is attached, you can observe the behavior of the ascent and descent of the fish considering two screws, one of ascent or lift and another of descent or descent. Electricity will be generated in the descent screw, and electric power will be consumed in the lift or rise screw.