The video shows a close-up overhead view of two koi fish swimming in a tank. One koi is predominantly orange with black speckles, while the other is white with a red marking on its head. Their fins are large and flowy, especially the white one's tail. The tank has a black grid on the bottom and a green growth on the upper edge. A coiled black cable is visible in the foreground, and a small metallic device with some writing on it is in the lower right corner. The fish are moving slowly, and the camera is relatively still.