The video shows a close-up of a small fish with a big mouth, which is opening and closing its mouth. The fish is surrounded by water and small rocks. The fish's body is covered in small spots, and its mouth is wide open, revealing its sharp teeth. The water around the fish is clear, and the small rocks are visible in the background. The fish appears to be alive and moving, but it is not swimming. The video does not contain any text or subtitles.