The video shows a group of colorful fish swimming around in an aquarium. The fish are of different sizes and colors, including blue, yellow, and orange. They are swimming around the rocks and plants in the tank, creating a lively and dynamic scene. The aquarium appears to be well-maintained, with clear water and a variety of decorations that provide a natural habitat for the fish. The fish are active and seem to be healthy, indicating that the aquarium is well-cared for. Overall, the video captures the beauty and diversity of the fish and their environment.