The video shows a close-up of a fish tank with several small fish swimming around. The fish are of different colors, including orange, white, and black. The water is clear, and bubbles can be seen rising to the surface. The fish are moving around, some swimming in groups while others swim alone. The tank appears to be well-maintained, with no visible algae or debris. The lighting in the tank highlights the vibrant colors of the fish, making them stand out against the dark background of the tank.