PURPOSE: A system for culturing crabs is provided to culture crabs in a limited space and to prevent crabs from eating each other. CONSTITUTION: A system for culturing crabs comprises a fish cage(130), a culturing bar(150), and a water tub(110). The top of the fish cage is opened and closed by a cover. The side and bottom thereof are formed in a mesh. The culturing bar is connected to the cover and is arranged inside the fish cage. The water tub forms an internal space into which the fish cage is inserted. The internal space is filled with water. The culturing bar is vertically installed at an interval from the bottom of the fish cage and is equipped with air stone connected to the air hose. The water tub is equipped with a water inlet and a water outlet.
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