A former dentist from Punjab, Amteshwar Singh Gill, has established North India's largest mechanized Recirculating Aquaculture System (RAS) fish farm. Operating for four years on half an acre, the Golden Aqua RAS facility produces 30-32 tonnes of Sole and Singhi fish annually, generating over Rs 1.5 crore in revenue with a 40% net profit. This advanced system uses tanks with filtered, reused water, significantly reducing consumption and allowing for controlled environmental conditions year-round.