Xiphophorus couchianus (Girard, 1859)

Monterrey platyfish, Platy monterrey



Taxonomy & Nomenclature

Synonym/s: Limia couchiana Girard, 1859 (protonym)


Conservation Status

Extinct in the wild

Last wild record: 1967

IUCN RedList status: Extinct in the Wild


Last recorded as pure individuals in 1967 (Almada-Villela & Contreras-Balderas, 2019). Hybrids with the Sunset platty (Xiphophorus variegatus) still remain in the wild, although are apparently rare.



Nuevo León, Mexico


Biology & Ecology










Original scientific description:

Girard, Charles Frédéric. (1859). Ichthyological notices, Proceedings of the Academy of Natural Sciences of Philadelphia 11: 113-122.

Other references:

Aguilera González, C. J. (1998). Conservación en cautiverio de peces amenazados del noreste de México. Universidad Autónoma de Nuevo León Facultad de Ciencias Biológicas. Informe final SNIB-CONABIO proyecto No. G005. México D. F.

Almada-Villela, P. & Contreras-Balderas, S. (2019). Xiphophorus couchianus (errata version published in 2019). The IUCN Red List of Threatened Species 2019: e.T23156A157724204. Downloaded on 12 January 2020.

Ceballos, G., Díaz Pardo, E., Martínez Estévez, L. and Espinosa Pérez, H. 2016. Los peces dulceacuícolas de México en peligro de extinción. FCE, UNAM, CONABIO, CONANP, Mexico City.

Contreras Balderas, S and Escalante Cavazos, M.A. 1984. Distribution and Known Impacts of Exotic Fishes in Mexico in W.R. Courtenay and J.R. Staufer (eds) Distribution, Biology and Management of Exotic Fishes. The Hopkins University Press, Baltimore, pp. 102-103.

Cui, R, Schumer, M, Kreuesi, K., Walter, R., Andolfatto, P and Rosenthal, G. 2013. Phylogenomics reveal extensive reticuate evolution in xiphophorus fishes. Evolution.

Dalrymple, S. E., Abeli, T., Ewen, J. G., Gilbert, T. C., Hogg, C. J., Lloyd, N. A., Moehrenschlager, A., Rodríguez, J. P. and Smith, D. (2023). Addressing Threats and Ecosystem Intactness to Enable Action for Extinct in the Wild Species. Diversity 15: 268.

Miller, R.R. (with the collaboration of Minckley, W.L. and Norris, S.M.). 2005. Freshwater Fishes of Mexico. University of Chicago Press, Chicago, Illinois.


<< Back to the Neopterygii (New-Finned Fishes) database