The video shows a large aquarium filled with various types of fish swimming around. The fish are of different sizes and colors, including blue, red, and yellow. The aquarium is decorated with rocks and coral, creating a natural habitat for the fish. The water is clear and the lighting is bright, allowing for a good view of the fish and their surroundings. The fish are seen swimming in different directions, some alone and some in groups. The video captures the peaceful and serene environment of the aquarium.