The video shows a group of fish swimming around in an aquarium. The fish are of different sizes and colors, with some having stripes and others being solid colored. The aquarium is decorated with green plants and rocks, creating a natural habitat for the fish. The water is clear, and bubbles can be seen rising to the surface. The fish move gracefully through the water, sometimes swimming close to the plants and rocks, and other times swimming in the open water. The lighting in the aquarium highlights the vibrant colors of the fish and the greenery of the plants.