The present disclosure relates to a fish farming tank for cultivating living fish, wherein the tank (1) comprises a bottom (2) and a side wall (3) defining an internal volume (4) for holding water up to a maximal water fill level, and an active flow control system for generating a circulating flow of water within the tank (1), wherein the active flow control system has a first water inlet arrangement (5a) for injecting water into the internal volume (4) and a first water outlet arrangement (6a) for removing water from the internal volume (4). The first water inlet arrangement (5a) is configured for injecting water over more than half of a maximal depth (7) stretching from an interior surface of the bottom (2) to the maximal water fill level. The present disclosure also relates to a method for generating a circulating flow of water in a fish farming tank for cultivating living fish.
