Filtration equipment for receptacle for living fish with function of increasing dissolved oxygen

The utility model provides filtration equipment for receptacle for living fish with function of increasing dissolved oxygen. The utility model is characterized in that an oxygenation centrifugal pump is installed on the current rotating shaft of the aquarium filter pump. When the centrifugal pump is rotated by the electrical motor to discharge the pollution, the oxygenation centrifugal pump is also motivated to rotate by the electrical motor so as to absorb the outside air into the aquarium through the air pipe oxygenation centrifugal pump and the exhaust pipe. The utility model can combine the function of filtration and oxygen enhancement into one function. The utility model has the advantages of low cost, small size, convenient for use and simple structure, which applies for all kinds of aquariums.