The video shows a group of fish swimming in an aquarium. The fish are of different colors and sizes, and they are swimming around in the water. The aquarium appears to be well-lit, and the fish are moving around freely. The water is clear, and the fish are visible from different angles. The fish seem to be healthy and active, and they are swimming in different directions. The aquarium appears to be a home or office setting, and the fish are the main focus of the video.