The video shows a group of fish swimming in a tank. The fish are of different sizes and colors, and they are swimming around the tank. The tank is filled with green plants, and the fish are swimming in and out of the plants. The water is clear, and the fish are moving smoothly. The plants are lush and vibrant, and they provide a natural habitat for the fish. The fish seem to be healthy and active, and they are swimming in different directions. The video captures the beauty and tranquility of the underwater world.