Fish lift for transporting fish between a headwater of a barrage and a tailwater of the barrage, comprising - a shaft and a container (7; 107), - wherein the shaft comprises an upper opening situated below a level of the headwater and having an upper lock outlet, - wherein the shaft comprises a lower opening situated below a level of the tailwater and having a lower lock inlet, - wherein the container (7; 107) can be moved between an upper position and a lower position, - wherein the container (7; 107) comprises a transport compartment (14; 114), - wherein the container (7; 107) has a first lateral opening and a second lateral opening in a wall (18; 118) of the container (7; 107) and these openings lead into the transport compartment (14; 114) from outside, - wherein the lateral openings (19, 20) are arranged in such a way that they are situated below the level of the headwater in the upper position of the container (7; 107) and that they are situated below the level of the tailwater in the lower position of the container (7; 107), characterized - in that the container (7; 107) is guided in the shaft on at least two rails (12, 13) in such a way that a contact between the container (7; 107) and an inner wall of the shaft is avoided in the upper position, in the lower position and in each intermediate position situated between the upper and the lower position (S3, S5), - in that, in each intermediate position of the container (7; 107), the first lateral opening of the container (7; 107) leading to the transport compartment (14; 114) is closed with respect to the interior of the shaft that surrounds the container (7; 107) by the first rail, and - in that, in each intermediate position of the container (7; 107), the second lateral opening of the container (7; 107) leading to the transport compartment (14; 114) is closed with respect to the interior of the shaft that surrounds the container (7; 107) by the second rail. - a shaft and a container (7; 107), - wherein the shaft comprises an upper opening situated below a level of the headwater and having an upper lock outlet, - wherein the shaft comprises a lower opening situated below a level of the tailwater and having a lower lock inlet, - wherein the container (7; 107) can be moved between an upper position and a lower position, - wherein the container (7; 107) comprises a transport compartment (14; 114), - wherein the container (7; 107) has a first lateral opening and a second lateral opening in a wall (18; 118) of the container (7; 107) and these openings lead into the transport compartment (14; 114) from outside, - wherein the lateral openings (19, 20) are arranged in such a way that they are situated below the level of the headwater in the upper position of the container (7; 107) and that they are situated below the level of the tailwater in the lower position of the container (7; 107), - in that the container (7; 107) is guided in the shaft on at least two rails (12, 13) in such a way that a contact between the container (7; 107) and an inner wall of the shaft is avoided in the upper position, in the lower position and in each intermediate position situated between the upper and the lower position (S3, S5), - in that, in each intermediate position of the container (7; 107), the first lateral opening of the container (7; 107) leading to the transport compartment (14; 114) is closed with respect to the interior of the shaft that surrounds the container (7; 107) by the first rail, and - in that, in each intermediate position of the container (7; 107), the second lateral opening of the container (7; 107) leading to the transport compartment (14; 114) is closed with respect to the interior of the shaft that surrounds the container (7; 107) by the second rail.