The video shows a group of fish swimming around in an aquarium. The aquarium is decorated with various types of plants and rocks. The fish are of different sizes and colors, and they swim around the tank in a calm and peaceful manner. The water is clear, and the lighting in the tank highlights the vibrant colors of the fish and the plants. The fish seem to be healthy and active, and they move around the tank gracefully. The aquarium appears to be well-maintained, and the fish seem to be thriving in their environment.