The video shows a group of fish swimming around in an aquarium. The fish are of different sizes and colors, including orange, blue, and yellow. They are swimming among green plants and rocks. The water is clear, and the lighting is bright, highlighting the vibrant colors of the fish and the plants. The fish are moving around calmly, occasionally darting quickly in different directions. The aquarium appears to be well-maintained, with clean water and healthy-looking plants.