Ricketts, Taylor H; Eric Dinerstein; David M. Olson; Colby J. Loucks; et al. (1999). Terrestrial Ecoregions of North America: a Conservation Assessment. Island Press;
Washington, DC.
Echelle, Anthony A. (2004) "Death Valley Pupfishes, mtDNA Divergence Times and Drainage History" in Reheis, Marith C. (ed.) Geologic and Biotic Perspectives on Late Cenozoic Drainage History of the Southwestern Great Basin and Lower Colorado River Region: Conference Abstracts. Open-File Report 2005–1404, US Geologic Survey.
Minckley WL, Miller RR, Norris SM (2002). "Three New Pupfish Species, Cyprinodon (Teleostei, Cyprinodontidae), from Chihuahua, México, and Arizona, USA". Copeia: Vol. 2002, No. 3 pp. 687–7.
Propst, David L. and Jerome A. Stefferud (1994) "Distribution and Status of the Chihuahua Chub (Teleostei: Cyprinidae: Gila nigrescens), with Notes on Its Ecology and Associated Species". The Southwestern Naturalist, Vol. 39, No. 3 (Sep., 1994), pp. 224–234.
Robert J. Behnke, Trout and Salmon of North America. publisher The Free Press,
ISBN0-7432-2220-2. Year 2002. pages=115–122, chapter Rainbow trout of Mexico.