The video shows a close-up of a man's arm as he moves it in front of a fish tank. The tank is filled with water and has several fish swimming around. The man's arm is in the foreground, and the fish tank is in the background. The fish are of different sizes and colors, and they swim around the tank, occasionally coming close to the glass. The man's arm moves slowly, and the fish swim around it, occasionally brushing against it. The lighting in the tank is bright, and the water is clear, allowing for a good view of the fish and the tank's decorations.