In the video, a person is seen cleaning a fish tank. The person is using a brush to scrub the sides of the tank. The tank is illuminated with purple lights, and there are several fish swimming inside. The person is wearing a black shirt and is standing in front of the tank. The fish are of different sizes and colors, and they are swimming around the tank. The person is focused on cleaning the tank and seems to be doing a thorough job. The water in the tank is clear, and the fish are swimming actively. The person's movements are steady and deliberate as they clean the tank.