The video shows a large aquarium with colorful fish swimming around. The fish are of various sizes and colors, including yellow, blue, and purple. The aquarium is decorated with rocks and plants, creating a natural habitat for the fish. The water is clear and well-lit, 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 aquarium appears to be well-maintained and clean.