In the video, there is 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 their surroundings. There are also plants and rocks in the aquarium, providing a natural habitat for the fish. The fish seem to be healthy and active, and there is no visible sign of any disease or injury. Overall, the video provides a peaceful and calming view of the underwater world.