The video shows a close-up view of a fish tank with various colorful fish swimming around. The tank is well-lit, and the water is clear. The fish are of different sizes and colors, including blue, yellow, and orange. Some of the fish are swimming near the top of the tank, while others are near the bottom. The tank also has some rocks and plants, providing a natural habitat for the fish. The fish are moving around freely, and there is no visible interaction between them.