The video shows a fish swimming in an aquarium. The fish is brown and white and is seen swimming among green plants. The plants are lush and healthy, and the fish moves gracefully through them. The aquarium appears to be well-maintained, with clear water and a clean environment. The fish seems to be the only living creature in the tank, and it moves freely without any signs of distress. The lighting in the aquarium is bright, highlighting the colors of the fish and the plants.