This video shows a group of fish swimming in a tank. The fish are of different sizes and colors, and they are swimming around in different directions. The tank appears to be well-lit, and the water is clear, allowing for a good view of the fish. The fish seem to be healthy and active, and there are no visible signs of disease or injury. The tank is likely located in a public place, such as a pet store or aquarium, where people can observe the fish up close. Overall, the video provides a peaceful and relaxing view of marine life.