The video shows a close-up view of a fish tank. The tank is filled with water and has a variety of fish swimming around. The fish are of different sizes and colors, and they are moving around the tank in different directions. The water is clear, and the tank is well-lit, allowing for a good view of the fish. There are no visible plants or decorations in the tank, and the background is not shown. The focus of the video is on the fish and their movements.