The video shows a large fish swimming in a body of water. The fish is grey in color and has a large mouth. It is swimming near the surface of the water, and the water is green in color. The fish appears to be alone in the water, and there are no other fish or objects visible in the video. The fish is moving slowly and gracefully, and its fins and tail are clearly visible as it swims. The video is shot from above the water, and the fish is the main focus of the video.