Blue tuxedo guppies are a colorful and popular variety of the guppy fish, also known as Poecilia reticulata. They are named for their striking blue coloration, which is accented by a black and white tuxedo pattern on their tails and fins. These fish are relatively small, typically reaching about 2 inches in length. They are also known for their peaceful nature and are popular among aquarium hobbyists for their ease of care and breeding. Blue tuxedo guppies are a great choice for beginner fishkeepers, as they are hardy and adaptable to a variety of aquarium environments.