Abstract: A self-contained, floating aquaculture tank for containing fish and other aquatic animal, plant, and algal species. The aquaculture tank includes a series of panels joined together by flexible connecting joints to form a cylinder-shaped tank enclosure with a conical bottom surrounded at or near the open end by a water-resistant and buoyant foam or other material. The tank is placed into a body of water where it floats and maintains the same water temperature as the surrounding body of water. The tank includes a waste cone at the bottom of the tank enclosure to which the lower portion of each panel is attached. The tank may also include devices for harnessing wind or solar energy to power lights, air pumps, and water pumps that may be components of the invention.