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 Mollienesia sphenops vantynei:
- Hubbs, Carl Leavitt. 1935. "Fresh-water fishes collected in British Honduras and Guatemala". Miscellaneous Publications, Museum of Zoology, University of Michigan. (28):13-15 (ffm00252)