The video shows a group of fish swimming around in an aquarium. The fish are of different colors, including yellow, orange, and purple. They are swimming around the rocks and plants in the tank, and some are hiding in the crevices of the rocks. The water is clear, and the lighting is bright, highlighting the vibrant colors of the fish. The aquarium appears to be well-maintained, with no visible algae or debris. The fish are active and seem to be healthy.