Fish farming plant (1) comprises a central tank (3) and one or more surrounding tanks (2) wherein the central tank (3) is used for water treatment, and the one or more surrounding tanks are used for farming of fish, further comprising flow applicators (8), whereby the flow rate of the water in the surrounding tanks (2) are individually independent of the water exchange rate, wherein - the fish farming plant (1) comprises several movable permeable section walls (12) in each of the surrounding tanks (2) dividing said tanks (2) in tank sections, - each surrounding tank (2) is equipped with one or two outlets (30) and one or two inlets (29), and - a substantially horizontal/laminar flow structure of the water in each one of said one or more surrounding tanks (2) is provided. Furthermore the use of the fish farming plant (1) for production of fish, especially fish with a great need for high flow rate and horizontal/ laminar flow structure is described.
