Gambusia senilis

{{Short description|Species of fish}}

{{Speciesbox

| image =

| status = NT

| status_system = IUCN3.1

| status_ref = {{cite iucn |author=NatureServe, Matamoros, W.A. |author2=Valdes Gonzales, A. |author3=Vega-Cendejas, M. |date=2019 |title=Gambusia senilis |volume=2019 |page=e.T8896A129984165 |doi=10.2305/IUCN.UK.2019-2.RLTS.T8896A129984165.en |access-date=15 November 2021}}

| taxon = Gambusia senilis

| authority = Girard, 1859

| synonyms =

}}

Gambusia senilis, the blotched gambusia, is a species of fish in the family Poeciliidae found in Mexico, where it is called guayacon pinto, and formerly in the Devil's River in the Rio Grande basin in Texas.{{FishBase|Gambusia|senilis|month=August|year=2019}} The Texas population was extirpated following the construction of the Amistad Dam.{{Cite web | url = http://txstate.fishesoftexas.org/gambusia%20senilis.htm | title = Gambusia senilis blotched gambusia | accessdate=3 November 2019 | website = Fishes of Texas}}