Tag Archives: Mexico City

Evarra eigenmanni Woolman

Plateau Chub (Evarra eigenmanni)

This Plateau Chub was described in 1894, it inhabited freshwater channels in the Chalco – and the Xochimilco-Tláhuac area in the Valley of Mexico, a region that is no longer existent due to the unstoppable growth of Mexico City.

The species apparently disappeared at around 1954.


Depiction from: ‘David Starr Jordan; Barton Warren Evermann: The fishes of North and Middle America: a descriptive catalogue of the species of fish-like vertebrates found in the waters of North America, north of the Isthmus of Panama. Washington: Smithsonian Institution, United States National Museum 1896-1900’

(public domain)


edited: 10.05.2021

Evarra bustamantei Navarro

Mexican Chub (Evarra bustamantei)

The Mexican Chub is one of three known species in this genus, all of them are now extinct due to habitat loss.


This Mexican Chub was described in 1955, it inhabited canals and streams in the Valley of Mexico, a plateau in central Mexico that now is nearly completely overbuilt by Mexico City, one of the largest cities on the planet.

The species died out at around 1983 as a result of the complete drying of the water bodies in the valley due to the withdrawal of water by the agriculture and the unstoppable growth of the city and its suburbs.


edited: 20.01.2020