Mexican dace

{{Short description|Extinct species of fish}}

{{speciesbox

| name = Evarra bustamantei

| status = EX

| status_system = IUCN3.1

| status_ref = {{cite iucn |author=Mejía Guerrero, O. |date=2019 |title=Evarra bustamantei |volume=2019 |page=e.T8431A3145702 |doi=10.2305/IUCN.UK.2019-2.RLTS.T8431A3145702.en |access-date=16 November 2021}}

| genus = Evarra

| species = bustamantei

| authority = Navarro, 1955

| synonyms =

}}

The Mexican dace (Evarra bustamantei), or Mexican chub, is an extinct species of ray-finned fish in the family Cyprinidae. It was found only in Mexico, in the canals and streams of the Valley of Mexico.{{cite journal|last1=Miller|first1=Robert R|last2=Williams|first2=James D|last3=Williams|first3=Jack E|title=Extinctions of North American Fishes During the Past Century|journal=Fisheries|date=December 1989|volume=14|issue=6|pages=22–38|url=http://forestry.state.nv.us/hearings/past/springetal/browseabledocs/Exhibits%5CGBWN%20Exhibits/GBWN_Exh_033%20Miller%20et%20al_Extinctions%20of%20North%20American%20Fishes.pdf|accessdate=16 December 2016|doi=10.1577/1548-8446(1989)014<0022:eonafd>2.0.co;2|bibcode=1989Fish...14f..22M |hdl=2027.42/141989|hdl-access=free}} It is estimated to have become extinct circa 1983.{{cite journal|last1=Burkhead|first1=Noel M|title=Extinction Rates in North American Freshwater Fishes, 1900–2010|journal=BioScience|date=September 2012|volume=62|issue=9|pages=798–808|url=http://web.biologicaldiversity.org/species/fish/spring_pygmy_sunfish/pdfs/Burkhead_Fish_Extinctions.pdf|accessdate=15 December 2016|doi=10.1525/bio.2012.62.9.5|s2cid=86188840|doi-access=free|bibcode=2012BiSci..62..798B }} The extinction of this species coincided with the drying of water bodies in the valley. This drying was a result of the increasing demands placed on the water resources of the valley by agriculture, as well as by the growth of Mexico City and its suburbs.