The video shows a large aquarium filled with various types of fish. The fish are swimming around in the water, some are hiding behind rocks, while others are swimming in the open. The aquarium is well-lit, and the water is clear, allowing for a good view of the fish. The fish vary in size and color, with some being bright and colorful, while others are more subdued in color. The aquarium appears to be well-maintained, with clean water and no visible debris.