The applicant has invented a closed-contained floating and submersible farming system for farming and storage of finfish and otheraqueous species, where a container (hereinafter the "tank" or the "fishtank") its geometrical shape, water flow system, anchoring system, fish faeces collection, the adjustable fish grid collector and separator (hereinafter "the fish grid"), and related operating functions, represent innovative solutions that in sum significantly reduce environmental impact, improved waste management and Production performance, as well as enhancing fish welfare. Furthermore, the invention expands the area where fish and other marine species can be farmed, including inshore and offshore, fresh water lakes, rivers and waters covered by ice parts of the year. The invention is depending on reliable supply from on-shore electrical power supply.
