The video shows a black fish with a long tail swimming in a body of water. The fish is seen swimming around in the water, with its tail moving back and forth. The water is clear, and the fish is the only visible creature in the frame. The fish appears to be healthy and is moving smoothly through the water. The video does not show any other objects or creatures in the water, and there are no visible landmarks or features that indicate the location of the water body. The video is shot from a close-up angle, focusing on the fish and its movements.