Aquaculture Recirculating Systems and Fish Welfare

Recirculating aquaculture systems offer improved welfare potential through water quality control and biosecurity.

Key Facts

Recirculating aquaculture systems (RAS) filter and recycle water, enabling precise water quality management
RAS facilities eliminate sea lice problems by preventing exposure through controlled water systems
Higher capital and operating costs of RAS mean welfare benefits come at economic premium
Indoor RAS facilities can control temperature, oxygen, and waste precisely for optimal fish welfare
RAS salmon production is expanding in North America and Europe as consumers seek welfare alternatives

Welfare Considerations

Recirculating aquaculture systems represent the most promising technology pathway for genuinely welfare-positive fish farming. Precise water quality control, elimination of sea lice, biosecurity from pathogens, and ability to implement optimal conditions for specific species all support better welfare outcomes than conventional open-net or pond systems. The economic premium reflects genuine welfare improvements. Consumer willingness to pay for RAS-produced fish drives investment in this more welfare-positive technology.

What You Can Do

Choose RAS-produced salmon and other species where available and affordable
Support market development for RAS-produced seafood through purchasing and advocacy
Follow the development of RAS technology and welfare standards for fish aquaculture
Advocate for investment in RAS research and infrastructure as a welfare-improving technology
Support organizations promoting welfare-positive aquaculture technology development