An aquarium equipment, comprising a water pump and a tank , the water pump comprising: a stator , a rotor assembly , an impeller and a power generation induction module ; wherein the stator comprises a U-shaped iron core and a coil winding wound around the U-shaped iron core , and the coil winding is connected to an external power source; the rotor assembly comprises a rotating shaft and a permanent magnet rotor ; the impeller is connected to the rotating shaft or to the permanent magnet rotor ; and the power generation induction module is spaced apart from the rotor assembly , the rotor assembly and the power generation induction module are both disposed within a range of a magnetic field at an opening of the U-shaped iron core , and the power generation induction module is electrically connected to an electric equipment; said aquarium equipment being characterised in that the rotor assembly , the impeller and the power generation induction module are disposed in the tank , and the stator is disposed outside the tank ; wherein a stator chamber for accommodating the stator is provided concavely at an outer wall of the tank in a direction facing inward the tank , wherein the stator chamber comprises two first accommodation chambers spaced apart from each other, the U-shaped iron core comprises two second iron core protrusions which protrude from two coil windings respectively, the two second iron core protrusions are arranged in the two first accommodation chambers respectively, wherein an accommodation groove is disposed in an inner wall of the tank and between the two first accommodation chambers , the permanent magnet rotor is disposed in the accommodation groove , and wherein the power generation induction module comprises two induction coils , and the two induction coils are wound respectively outside the two first accommodation chambers along circumferences of the first accommodation chambers . the stator comprises a U-shaped iron core and a coil winding wound around the U-shaped iron core , and the coil winding is connected to an external power source; the rotor assembly comprises a rotating shaft and a permanent magnet rotor ; the impeller is connected to the rotating shaft or to the permanent magnet rotor ; and the power generation induction module is spaced apart from the rotor assembly , the rotor assembly and the power generation induction module are both disposed within a range of a magnetic field at an opening of the U-shaped iron core , and the power generation induction module is electrically connected to an electric equipment; said aquarium equipment being characterised in that the rotor assembly , the impeller and the power generation induction module are disposed in the tank , and the stator is disposed outside the tank ; wherein a stator chamber for accommodating the stator is provided concavely at an outer wall of the tank in a direction facing inward the tank , wherein the stator chamber comprises two first accommodation chambers spaced apart from each other, the U-shaped iron core comprises two second iron core protrusions which protrude from two coil windings respectively, the two second iron core protrusions are arranged in the two first accommodation chambers respectively, wherein an accommodation groove is disposed in an inner wall of the tank and between the two first accommodation chambers , the permanent magnet rotor is disposed in the accommodation groove , and wherein the power generation induction module comprises two induction coils , and the two induction coils are wound respectively outside the two first accommodation chambers along circumferences of the first accommodation chambers . <EOS>