The video shows a single fish swimming in the water. The fish has a long body and fins, and it is moving slowly through the water. The background is dark, and the fish is the only visible object in the video. The fish's movements are smooth and graceful, and it appears to be alone in the water. There are no other fish or objects visible in the video. The fish's color is not clearly visible due to the low lighting, but it seems to have a dark body with lighter fins. The water is calm, and there are no visible currents or waves. The video does not show any other significant action or event.