The video shows a fish tank with several fish swimming around. The fish are of different sizes and colors, and they are swimming in different directions. The tank is filled with water and has a filter in the center. The fish are moving around the tank, and some are swimming near the surface while others are near the bottom. The lighting in the tank is bright, and the fish are clearly visible. The video is shot from outside the tank, and the camera is moving slightly to capture the fish from different angles.