The video shows a close-up of a fish tank. The tank is made of glass and has a metal frame. Inside the tank, there are several fish swimming around. The water in the tank is clear, and there are bubbles visible, indicating that the tank is equipped with an aeration system. The fish are of different sizes and colors, and they are swimming in different directions. The lighting in the room is dim, but the tank is well-lit, allowing for a clear view of the fish and their environment.