Provided is an aquarium, comprising: a tank and a water pump, the water pump comprising a stator and a rotor, and the tank comprising a tank wall； a rotor chamber, disposed on a side of the tank wall adjacent to the interior of the tank, and configured to receive the rotor； a rotating shaft, configured to support the rotor, and disposed in the rotor chamber； an impeller disposed to be coupled to the rotor and disposed in the rotor chamber； and a stator chamber disposed to receive the stator, the stator chamber being disposed on a side of the tank wall adjacent to the outside of the tank, and disposed at a position corresponding to the rotor chamber to cause the stator to drive the rotor. The stator located outside the tank drives the rotor inside the tank to ensure the operation of the water pump, and also avoids the contact of charged parts such as the stator with the water in the tank, effectively preventing leakage of the charged parts.
