The video shows a fish swimming in a body of water. The fish is dark in color and has a long body with fins. It is swimming near the surface of the water, which is greenish in color. The fish appears to be alone in the water, with no other fish or objects visible in the frame. The fish moves slowly and gracefully, with its fins and tail undulating as it swims. The water is clear, allowing for a good view of the fish and its movements.