The video shows a large fish tank with various fish swimming around. The tank is filled with water and has a blue light that illuminates the fish and the coral. The fish are of different sizes and colors, including yellow, red, and blue. The coral in the tank is also of different shapes and sizes, adding to the beauty of the scene. The fish are swimming in different directions, some near the top of the tank and others near the bottom. The water is clear, and the fish are moving smoothly through it.