The video shows a close-up of an aquarium with 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 movements. The fish seem to be healthy and active, and there are no visible signs of disease or stress. The aquarium appears to be well-maintained, with clean water and a healthy environment for the fish.