The video shows several fish tanks with different types of fish swimming around. The tanks are illuminated with blue light, and the fish are of various sizes and colors. Some of the fish have distinctive patterns on their bodies, while others are more uniform in color. The tanks are clean and well-maintained, with clear water and no visible debris. The fish are seen swimming freely, sometimes interacting with each other. There are no visible titles, subtitles, or informative text in the video.