guntheri, Xiphophorus Jordan [D. S.] & Evermann [B. W.] 1896:702 [Bulletin of the United States National Museum No. 47; ref. 2443] Río Chisoy, basin of Río Usumacinta, Guatemala. Syntypes: BMNH 1864.1.26.185 (1), 1894.1.26.193 (1). •Synonym of Xiphophorus hellerii Heckel 1848, but a valid subspecies -- (Rosen & Bailey 1963:66 [ref. 7067], as helleri guentheri). •Synonym of Xiphophorus hellerii Heckel 1848 -- (Lucinda in Reis et al. 2003:573 [ref. 27061], Meyer 2015:382 [ref. 34698] as guentheri, Huber 2019:146 [ref. 36941]). Current status: Synonym of Xiphophorus hellerii Heckel 1848. Poeciliidae: Poeciliinae. Habitat: freshwater.