A fish farming plant is adapted for floating in free water. The plant comprises a substantially vertical inlet pipe and a corresponding outlet pipe for taking in and discharging water, respectively, at a water depth having the desired water quality at a depth (h). A substantially horizontal residential compartment of an accommodation assembly has an inlet end and an outlet end. Lattices are provided at the inlet end and the outlet end. Also provided at the ends are angled end sections for connecting the inlet pipe, outlet pipe, and the residential compartment. The plant also comprises at least one arrangement for providing water flow through the residential compartment. A module for a residential compartment of a fish farming plant, a method for manufacturing an accommodation assembly, use of such a fish farming plant for smolt, as well as a method for emptying such a fish farming plant are also provided.
