The video shows a group of fish swimming in a tank. The fish are of different sizes and colors, and they are swimming around the tank in various directions. The tank appears to be well-lit, and the water is clear, allowing for a good view of the fish. The fish are moving in a calm and leisurely manner, and there are no signs of aggression or distress among them. The tank seems to be well-maintained, with no visible debris or algae. Overall, the video provides a peaceful and relaxing view of the fish in their environment.