|Scientific Name:||Gambusia amistadensis|
|Species Authority:||Peden, 1973|
|Red List Category & Criteria:||Extinct ver 3.1|
|Reviewer(s):||Smith, K. & Darwall, W.R.T.|
|Facilitator/Compiler(s):||Hammerson, G.A. & Ormes, M.|
This species is listed as Extinct because the only population was exterminated by a reservoir, and captive populations were genetically contaminated by western mosquitofish.
|Previously published Red List assessments:||
|Range Description:||Historical range included Goodenough Spring and adjacent spring run, which flowed 1.3 km to Rio Grande, Val Verde County, Texas. Captive stocks that formerly existed at the University of Texas and Dexter Fish Lab are now extinct (contaminated with mosquitofish).|
Regionally extinct:United States
|Range Map:||Click here to open the map viewer and explore range.|
|Population:||No occurrences remain.
Extinct (Hubbs and Jensen 1984, USFWS 1987, Miller et al. 1989, Robins et al. 1991). See Minckley et al. (1991) for a detailed account of the history of this species and Goodenough Spring.
|Habitat and Ecology:||This species inhabited a large vegetated spring and its effluent (Minckley et al. 1991, Page and Burr 2011).|
|Movement patterns:||Not a Migrant|
|Major Threat(s):||Its habitat was inundated by the Amistad Reservoir, extirpating the species in its natural range.|
|Conservation Actions:||This species is extinct and does not require protection or management, monitoring, or research action.|
|Citation:||NatureServe. 2013. Gambusia amistadensis. The IUCN Red List of Threatened Species 2013: e.T8888A18229604. . Downloaded on 13 February 2016.|
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