The video shows a fish swimming in the water at night. The fish is illuminated by a light source, making its body glow and revealing its scales and fins. The fish moves gracefully through the water, its body undulating with the motion. The light source appears to be coming from above, casting a spotlight on the fish and creating a dramatic effect. The water is dark, and the background is not visible, focusing all attention on the fish. The fish's movements are smooth and continuous, and it appears to be the only living creature in the frame.