The video shows a large group of small fish swimming in a body of water. The fish are mostly silver in color, with some having blue stripes. They are swimming in different directions, creating a chaotic and lively scene. The water is clear, and the fish are visible from the surface down to the bottom. The fish are of various sizes, but most are small and appear to be young. There are no other objects or creatures visible in the video, just the fish and the water.