The video shows a large aquarium filled with various types of fish. The fish are swimming around in the water, and the camera pans around the tank to show different angles of the fish. The aquarium appears to be well-maintained, with clear water and a variety of colorful fish. The fish are of different sizes and shapes, and some are swimming near the top of the tank while others are near the bottom. The lighting in the aquarium highlights the vibrant colors of the fish, making them stand out against the background.