The video shows a person cleaning a fish tank with a blue sponge. The tank is filled with water, and there are several fish swimming around. The person is wearing a purple glove and is seen cleaning the tank while the fish swim around. The fish are of different colors and sizes, and the tank is decorated with rocks and plants. The person is using the sponge to clean the glass walls of the tank, and the fish seem to be swimming around calmly.