The video shows a group of fish swimming in an aquarium. The fish are of different colors, including orange, black, and yellow. They are swimming around the tank, which is filled with green plants and dark gravel. The fish are of various sizes and appear to be healthy and active. The aquarium seems to be well-maintained, with clear water and no visible debris. The fish are moving freely, and there are no signs of aggression or stress among them. The lighting in the tank is bright, highlighting the vibrant colors of the fish and the greenery of the plants. Overall, the video captures a peaceful and serene scene of aquatic life.