METHOD FOR RAISING FISH IN A RECIRCULATED AQUACULTURE SYSTEM

摘要

The present invention relates to a method of raising fish in a recirculated aquaculture system (RAS), the RAS comprising a fish holding unit (2) in fluid communication with a water supply (3), the fish holding unit containing a volume of water defining a water depth, the water having an osmotic concentration, an oxygen concentration, a temperature, and a pH, the method comprising the steps of: providing a flow of non-recirculated water to the water supply, the non-recirculated water being different from the water in the fish holding unit with respect to at least one of the osmotic concentration, the oxygen concentration, the CO2 concentration, the N2 concentration, the NH4 + concentration, the temperature and the pH, providing feed pellets (31), adding the feed pellets to the non- recirculated water and hydraulically transporting the feed pellets to the fish holding unit. The method allows a more efficient operation of a RAS facility. The invention also relates to a RAS facility.