What does a RAS fish farming system cost to set up in India?

RAS is the most capital heavy and technical option in fish farming, so go in with caution. A recirculating aquaculture system uses tanks plus mechanical and biological filters, a sump, pumps, oxygen or aeration, and often a degasser and UV unit to clean and reuse the same water. A small commercial RAS unit commonly runs into many lakhs of rupees, and a medium unit can cross tens of lakhs depending on tank number, automation and building. These figures vary widely by design and supplier, so do not treat any single quote as fixed. The system depends on continuous power, so a generator backup is essential, since a pump failure for even an hour can kill a dense stock. This is not a beginner project. Get a detailed design and cost verified by your state Fisheries department or a reputable RAS consultant and visit a working unit before investing.