Cyprinodon rubrofluviatilis

{{Short description|Species of fish}}

{{Speciesbox

| image = Cyprinodon rubrofluviatilis.jpg

| taxon = Cyprinodon rubrofluviatilis

| status = LC

| status_system = IUCN3.1

| status_ref = {{cite iucn |author=NatureServe |date=2013 |title=Cyprinodon rubrofluviatilis |volume=2013 |page=e.T202376A15363963 |doi=10.2305/IUCN.UK.2013-1.RLTS.T202376A15363963.en |access-date=20 November 2021}}

| authority = Fowler, 1916

| synonyms = Cyprinodon bovinus rubrofluviatilis Fowler, 1916

}}

Cyprinodon rubrofluviatilis, known as the Red River pupfish, is a species of pupfish from the United States. It is found only in the Red River of the South and Brazos River drainages of Texas and Oklahoma.{{cite web |url=http://www.fishbase.org/summary/Cyprinodon-rubrofluviatilis.html |title=Cyprinodon rubrofluviatilis Fowler, 1916 |work=FishBase |editor=Rainer Froese |accessdate=November 24, 2011}}

It grows to a total length of {{cvt|5.8|cm}} and feeds on midge larvae and other insects. It was first described by Henry Weed Fowler in 1916, as a subspecies of the species Cyprinodon bovinus;{{cite journal |author=Henry W. Fowler |year=1916 |title=Notes on fishes of the orders Haplomi and Microcyprini |journal=Proceedings of the Academy of Natural Sciences of Philadelphia |volume=68 |issue=3 |pages=415–439 |jstor=4063702 |url=https://www.biodiversitylibrary.org/item/79453#page/438/mode/1up|author-link=Henry Weed Fowler }} the specific epithet {{lang|la|rubrofluviatilis}} refers to the Red River.{{cite web |url=http://www.bio.txstate.edu/~tbonner/txfishes/cyprinodon%20rubrofluviatilis.htm |title=Cyprinodon rubrofluviatilis, Red River pupfish |work=Texas Freshwater Fishes |publisher=Texas State University–San Marcos |accessdate=November 24, 2011 |url-status=dead |archiveurl=https://web.archive.org/web/20120425074029/http://www.bio.txstate.edu/~tbonner/txfishes/cyprinodon%20rubrofluviatilis.htm |archivedate=April 25, 2012 }}