The video shows a group of fish swimming in a tank. The fish are of different colors, including orange, black, and white. They are seen swimming around the tank, with some fish swimming near the top and others near the bottom. The fish are of different sizes and shapes, with some having long fins and others having shorter fins. The tank appears to be well-lit, with light reflecting off the water's surface. The fish are moving in different directions, some swimming in groups while others are alone. The video captures the peaceful and serene movement of the fish as they navigate the tank.