The video shows a large aquarium with a variety of fish swimming around. The fish are of different sizes and colors, including white, black, and striped patterns. The aquarium is well-lit, and the water is clear, allowing for a good view of the fish and their movements. The fish are seen swimming in different directions, some near the surface and others near the bottom of the tank. There are no visible plants or decorations in the aquarium, but the sandy bottom provides a natural habitat for the fish.