The video shows a close-up of a fish swimming in an aquarium. The fish has a long, flowing tail and fins that are white and blue in color. The background of the video is filled with green plants and leaves, creating a natural and serene environment for the fish. The fish moves gracefully through the water, its tail and fins undulating gently as it navigates the aquarium. The lighting in the video is bright, highlighting the vibrant colors of the fish and the lush greenery of the plants.