What is Gila topminnow?
{{Speciesbox | status = LC | status_system = IUCN3.1 | status_ref = <ref name = IUCN>{{cite iucn | author = Matamoros, W.A. |url=https://www.iucnredlist.org/species/15350832/176961098 | year =2020 | title =Gila topminnow: ''Poeciliopsis occidentalis'' | accessdate=December 14, 2021 | volume = 2020 | page = e.T15350832A176961098 | doi = 10.2305/IUCN.UK.2020-3.RLTS.T15350832A176961098.en}}</ref> | image =Gila topminnow Poeciliopsis occidentalis.jpg | image_caption = | image2 = | image2_caption = | taxon = Poeciliopsis occidentalis | authority = | synonyms = | synonyms_ref = }} The '''Gila topminnow''' or '''charalito''' (''Poeciliopsis occidentalis'') is a fish in the family [[Poeciliidae]]. It lives in [[North America]] and [[Mexico]].<ref name=USFW>{{cite web|url=https://ecos.fws.gov/ecp/species/1116|accessdate=December 15, 2021|publisher=U.S. Fish and Wildlife Service|title=Gila topminnow (incl. Yaqui) (''Poeciliopsis occidentalis'')|author=Environmental Conservation Online System}}</ref> ==Home== This fish lives in the southern United States and northern Mexico. It lives as far south as the [[Gila River]]. ==Threats== The [[mosquitofish]] killed so many Gila topminnows that the Gila topminnow became endangered. People put it on the Endangered Species List in 1973. Since then, human beings brought the fish to many new places where it could live.<ref name=IUCN /> This fish is still in some danger because human beings change the places where it lives, because [[invasive species]] kill it or eat all the food, and because human beings have changed the [[water table]].<ref name=IUCN /> When human beings take water from wells for farming and other things, the water sinks lower down [[aquifer|in the earth]]. This can make streams and ponds dry up. Because this fish now lives in so many places, it is officially not endangered any more. However, scientists are still studying it.<ref name=IUCN /> ==Size== This fish looks like a [[guppy]], but it has no spots on its fins. It is about 2.5 to 5 cm in size.