The video shows a large aquarium with a variety of colorful fish swimming around. The fish are of different sizes and colors, including blue, yellow, and gray. The aquarium is decorated with rocks, plants, and coral, creating a vibrant underwater scene. The fish are seen swimming in different directions, some near the surface and others near the bottom of the tank. The water is clear, and bubbles can be seen rising to the surface. The lighting in the aquarium highlights the colors of the fish and the decorations, making the scene look lively and dynamic.