The video shows a close-up of a fish tank with several fish swimming around. The fish are of different sizes and colors, including shades of blue, orange, and black. The tank is decorated with green plants and rocks, creating a natural habitat for the fish. The water is clear, and the fish are seen swimming in different directions, some near the surface and others near the bottom of the tank. The lighting in the tank highlights the vibrant colors of the fish and the greenery.