The video shows an aquarium with various fish swimming around. The fish are of different sizes and colors, and they are swimming in and out of the rocks and coral. The aquarium is well-lit, and the water is clear, allowing for a good view of the fish and their surroundings. The fish are moving around calmly, and there is no sign of any aggression or distress. The rocks and coral in the aquarium are of different shapes and sizes, providing a natural habitat for the fish. The video does not show any human interaction or other objects besides the fish and their environment.