RAS (Recirculating Aquaculture System)

This aquaculture system is that system that operates by filtering water from the shellfish tanks so that it can be reused within the tank. This system helps reduce the amount of water and space and the steps in this procedure include solids removal, ammonia removal, CO2 removal, and oxygenation. The filtration system operates in such a manner that helps in keeping the water clean and provides a healthy environment for the fish. However, it orders to encourage small-scale fish farmers and entrepreneurs and to facilitate fish production in urban and semi-urban areas where land and water are scarce, it is proposed to promote Backyard Recirculation Agriculture Systems

Advantages of RAS:

There are certain advantages of RAS that are as follows: • Judicial use of water and land areas • Extended durability of tanks and equipment • Feed management is enhanced in RAS when feeding can be monitored for 24 hours. • Potentially eliminate release of parasites to recipient waters. • Enable secure production of non-endemic species. • Reduction of direct operational costs linked with feed, predator control and parasites.

Species Suitable for RAS:

The species suitable for RAS are as follows: • Rainbow Trout • Pangasius • Pearl spot • Tilapia • Silver/ Indian Pompano • Cobia • Barramundi.

Components of RAS

• Insulated shed • Store cum office for feed and accessories • Pump house • Settling tanks for sludge • Overhead tanks • Pumps and motos • Power generator • Solid collectors • Biofilters, UV Units • Electrification • Water testing kit • Automatic feeder • Aeration system • Water supply system, bore well etc • Inputs such as seed, feed, additives and supplements, man power etc.