The video shows a group of small fish swimming in a tank. The fish are moving around the tank, and the camera follows them as they swim. The tank appears to be well-lit, and the water is clear, allowing for a good view of the fish. The fish are of different sizes and colors, and they seem to be healthy and active. The tank is decorated with plants and rocks, providing a natural environment for the fish. The camera moves smoothly, following the fish as they swim around the tank.