Considered a synonym of Poecilia sphenops Valenciennes, 1846
- 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 Poecilia spilurus:
- Günther, Albert C. L. G. 1866. "Catalogue of the Physostomi, containing the families Salmonidae, Percopsidae, Galaxidae, Mormyridae, Gymnarchidae, Esocidae, Umbridae, Scombresocidae, Cyprinodontidae, in the collection of the British Museum". Catalogue of the fishes in the British Museum. 6:1-368 (ffm04521)