The video shows a close-up of a fish tank with several fish swimming around. The fish are of different sizes and colors, including blue, red, and yellow. The tank is filled with green plants and rocks, creating a natural habitat for the fish. The water is clear, allowing for a good view of the fish and their surroundings. The fish are seen swimming in different directions, some near the surface while others are deeper in the tank. The video captures the peaceful and serene environment of the fish tank.