The video shows a group of fish swimming in an aquarium. The aquarium is decorated with rocks and plants, creating a natural habitat for the fish. The fish vary in size and color, with some having stripes and others being solid-colored. The water is clear, and the lighting is bright, highlighting the vibrant colors of the fish. The fish are seen swimming around the tank, occasionally darting towards the camera. The aquarium appears to be well-maintained, with no visible algae or debris.