1. RAS stands for Recirculation Aquaculture System
  2. A hi-tech way to grow and farm fish intensively under controlled conditions for optimum survival and growth of fish.
  3. Rears fish at high densities in indoor tanks.
  4. Allows efficient recirculation, filtration and removal of wastes prior to recycling back to the fish grow-out units. New water is added to the RAS only to make up for water loss through system flushing and minor evaporative loss.
  5. Predominantly used in land-based operation.
  6. It involves both freshwater and seawater.


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