Three-dimensional fish culture device with water purification

The invention relates to the technical field of aquaculture and particularly relates to a three-dimensional fish culture device with water purification. The three-dimensional fish culture device comprises four supporting rods, four circular tubes and two straight plates, wherein the two straight plates are fixedly mounted at upper ends of corresponding two supporting rods of the same side separately, snapping mechanisms are further arranged between the supporting rods and the circular tubes, two bearings penetrating through the straight plates are separately mounted at middle parts of the twostraight plates, one side of one straight plate is connected with a motor box through bolts, a waterproof motor is placed in the motor box, an output shaft of the waterproof motor penetrates through the two bearings and extend to the other side of each straight plate separately, multiple connecting mechanisms are arranged on the output shaft of the waterproof motor between the two straight platesand are connected with a f