The invention relates to a system for the elimination of parasites adhered to fish, by directly applying electricity to the fish, thereby removing the parasites without harming the fish, the system comprising: an entry and drainage area (1) that allows the fish to be separated from the water transporting them, which is joined to an application area (2) where electricity is applied to the fish, by means of contact with electrodes (3, 3b) such as curtain electrodes (3) and/or grill electrodes (3b), the electricity being controlled by a control unit (4) that regulate and sets the intensity, voltage and electrical frequency required to remove the parasites without harming the fish； spray nozzles (5) installed in the application area, which spray water on the fish to cause the parasites to fall off and move through a return chute (9) that is installed below the application area to receive the sprayed water and parasites contained therein and channel same into a drain； a capturing filter (6) installed in a drainage pipe of the return chute, which traps the parasites, allowing only water to pass to a pond (7) that stores the water for spraying and recovers the water by means of the return chute (9)； a pump (8) that pumps the water to the spray nozzles (5)； and an outlet (10), tube or pipe joined to the application area, through which the fish return to their environment, without parasites.
