The video shows a large fish swimming in a tank. The fish has a long body and a pointed nose. It is swimming near the bottom of the tank, which is covered in small rocks and pebbles. The tank appears to be well-lit, and there are no other fish visible in the video. The fish moves slowly and gracefully, its body undulating smoothly with each movement. The tank seems to be indoors, and there are no other objects or people visible in the video.