In the video, a large fish is swimming in a body of water. The fish has a brown body and is moving its fins and tail to navigate through the water. The water is clear, and there are green plants visible in the background. The fish appears to be alone in the water, and there are no other fish or objects in the immediate vicinity. The fish is the main focus of the video, and its movements are the primary action. The video does not contain any text or subtitles.