The Red Tuxedo Swordtail is a North American livebearer related to and in the same genus, Xiphophorus, as the platies. Most commercial strains of swordtails have mixed heritage, including ancestors from X. hellerii, X. maculatus and X. variatus. Commercial swordtails are primarily descended from X. hellerii. Males often reach 7.5cm (3 in.), not counting the swordtail. Females are somewhat larger and much heavier. Both sexes have black bodies and clear fins. Males like all swordtails have an extended “sword” from the bottom margin of caudal. This fish has no natural range, but of its ancestors hail from Mexican and Central America.
We acquired this strain from a Florida tropical fish farm in 2003. This strain breeds true for color although there is much variation in the degree of black in the tuxedo and the hue of the red.