RAS Indoor Fish Farming
These Recirculating Aquaculture Systems (RAS) are a new form of fish production systems, which actually bridge the gap between fish demand and supply. It is an intensive mechanism where the culturist has to provide the biological needs for the organisms to grow and develop. This new system encourages fish farming in a controlled environment unlike the traditional method, where fish are farmed in open ponds and raceways. The water used in these systems is recycled regularly for a better environment for the fish.
RAS Indoor Fish Farming Image 1 
RAS Indoor Fish Farming Image 2
The RAS fish farming project describes the structure of the farming system and also at the end gives a rough estimate of the investment and profits associated with the system. Rabala Agro Industries Ltd. has a successful ornamental fish farm with RAS systems.