Rosen, Donn. “Middle-American Poeciliid Fishes of the Genus Xiphophorus”. Bulletin of the Florida Museum of Natural History 5, no. 4 (June 14, 1960): 57–242. Accessed September 16, 2025. https://flmnhbulletin.com/index.php/flmnh/article/view/flmnh-vol5-no4.