The video shows a group of fish swimming in a tank. The fish are of different sizes and colors, and they are swimming around in the water. The tank appears to be well-lit, and the fish are moving around freely. The water is clear, and the fish are visible from different angles as they swim around. The fish seem to be healthy and active, and they are moving in different directions. The tank seems to be a home or office setting, and the fish are the main focus of the video.