The Celestial Pearl Danio (Danio margaritatus), commonly known as the Galaxy Rasbora, is a small, vibrant freshwater fish native to Myanmar, popular for nano aquariums. They are characterized by dark blue bodies covered in iridescent, pearl-like spots, with vibrant red-orange fins and a 3-5 year lifespan. Growing to about 1 inch (2.5 cm), they thrive in planted, peaceful community tanks.