The project will create the basis and disseminate information and learning materials on a very cost-effective method of fish farming. The method implies keeping and growing fish stock at a special system with a closed-circled water supply. The system will have a set regime of temperature and nutrition. As a result, the project plans to show that this method is hundred times more cost-effective than extracting fish stock from the natural water bodies and thus redirect fishermen from the extraction towards the fish farming.