The video shows a blue fish with a yellow tail swimming in an aquarium. The fish has a vibrant blue body and a bright yellow tail. It moves gracefully through the water, occasionally turning and twisting its body. The background is blurred, but it appears to be a typical aquarium setting with rocks and plants. The fish's scales are visible, reflecting light and giving it a shiny appearance. There is no visible title, subtitle, or other text in the video.