The video shows a group of small fish swimming in a tank. The fish are of different colors, including green, yellow, and white. They are swimming around the tank, occasionally coming close to the camera. The tank appears to be well-lit, and the water is clear. The fish are of various sizes, but all are small and appear to be young. There is no visible plant life or decorations in the tank, and the background is a plain, light color. The fish move freely and seem to be healthy.