The video shows a large aquarium filled with water and various 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 their surroundings. The fish seem to be healthy and active, and there are no visible signs of algae or other problems in the water. The aquarium appears to be well-maintained, and the fish seem to be thriving in their environment.