Abstract: To harvest aquaculture from a pond, a net called a floor is placed at the bottom of one end of the pond. A second net, called a wing, is pulled with tractors from the opposite end of the pond to concentrate aquaculture on the floor. The wing is attached to wheel assemblies, which, in turn, are attached to booms pivotably connected to the tractors. As the wing sweeps down the pond, wheels in the wheel assemblies seal the edges of the pond. Floats and weights ensure that the wing covers the entire vertical cross-section of the pond. Conductors are employed at the base of the wing to create a current which causes aquaculture to leave the bottom. Hydraulic means are employed to adjust the height of the booms so that the wheels follow the land contours near the edges of the pond and so that the booms may lift the floor to concentrate the aquaculture therein.