Considered a synonym of Pseudoxiphophorus bimaculatus (Heckel, 1848)
- Rosen, Donn E & R.M. Bailey. 1963. "The poeciliid fishes (Cyprinodontiformes), their structure, zoogeography, and systematics". Bulletin of the American Museum of Natural History. 126(1):1-176 (ffm04566)
Original description as Pseudoxiphophorus pauciradiatus:
- Regan, Charles Tate. 1904. "Descriptions of new or little-known fishes from Mexico and British Honduras". Annals and Magazine of Natural History. (Ser7)13:255-259 (ffm00273)