A cleaning robot that comprises a housing that comprises a fluid inlet, a fluid outlet, a rear edge and a front edge; a filtering unit; an impeller; a pump motor that is configured to rotate the impeller; wherein the impeller is configured to induce a flow of fluid from the fluid inlet through the filtering unit and towards the fluid outlet; wherein the pump motor is substantially closer to the front edge of the housing than to the rear edge of the housing; and wherein each one of the fluid inlet and the fluid outlet is substantially closer to the rear edge of the housing than to the front edge of the housing