The video shows a fish swimming in an aquarium. The fish is brown and white in color and is seen swimming around the green plants in the tank. The water is clear and the lighting is bright, making the fish and plants clearly visible. The fish appears to be healthy and active, moving around the tank with ease. The aquarium seems to be well-maintained, with clean water and no visible debris. The plants are lush and green, indicating good health and care. The fish is the only visible creature in the tank, suggesting it may be a single-fish aquarium. Overall, the video provides a peaceful and calming view of a fish in its natural habitat.