The video shows a yellow fish swimming in an aquarium. The fish is seen swimming around the tank, exploring the different areas. The aquarium is decorated with rocks and coral, creating a natural habitat for the fish. The lighting in the tank highlights the vibrant colors of the fish and the surrounding decorations. The fish appears to be healthy and active, moving smoothly through the water. The aquarium seems to be well-maintained, with clean water and no visible debris. Overall, the video captures the beauty and tranquility of the underwater world.