The Tuxedo Red Guppy is a classic fancy strain of Poecilia reticulata characterized by the 'tuxedo' genetic trait, which produces a bold contrast between a dark (black or dark blue) anterior body and a brilliantly colored posterior — in this variety, a vivid red to orange-red on the caudal peduncle and tail fin. The tuxedo pattern is one of the oldest and most recognized guppy strain characteristics, named for its resemblance to a formal tuxedo suit.
Male Tuxedo Red Guppies are small but visually striking, with the dramatic color contrast drawing the eye immediately. The tail fin is typically large — often a fan, delta, or veil shape — extending the vivid red coloration and maximizing display surface. Females are larger and less colorful, as typical for the species.
Like all fancy guppy strains, the Tuxedo Red is a product of selective breeding from wild Poecilia reticulata populations. It shares the hardy, adaptable nature of the species, tolerating a wide range of water conditions and readily reproducing in the aquarium. It is one of the most widely available and popular guppy varieties worldwide. The Tuxedo Red coloration is produced by a combination of the tuxedo gene (controlling the dark anterior pigmentation) and separate red color genes affecting the posterior body and fins. Understanding this genetic architecture is part of what makes fancy guppy breeding intellectually engaging — hobbyists can predict offspring ratios and color outcomes with considerable precision by understanding the underlying genetics.