The video shows a group of fish swimming in an aquarium. The fish are of different sizes and colors, including orange, yellow, and white. They are swimming around the tank, some hiding behind rocks and others swimming in the open water. The aquarium has a rocky bottom and is decorated with purple flowers. The fish are moving in different directions, some swimming towards the camera and others away from it. The water is clear and the lighting in the tank is bright, allowing for a good view of the fish and their surroundings.