The video shows a large aquarium with a variety of fish swimming around. The fish are of different sizes and colors, and they are swimming in different directions. The aquarium is well-lit, and the water is clear, allowing for a good view of the fish and the decorations in the tank. The fish are moving around the tank, sometimes swimming close to the glass and other times swimming near the bottom. The aquarium appears to be well-maintained, with clean water and healthy-looking fish.