In the video, we see a tank filled with water and various fish swimming around. The fish are of different sizes and colors, and they are swimming in different directions. The tank is also filled with rocks and shells, which add to the natural look of the scene. The water is clear, and we can see the fish moving around the tank. The fish seem to be healthy and active, and the tank is well-maintained. The video provides a peaceful and calming view of the underwater world.