A Virtual Museum on the State's Fish Biodiversity
Gambusia clarkhubbsi
San Felipe Gambusia

Taxonomic Hierarchy

Poeciliidae (Livebearers)
Gambusia clarkhubbsi (San Felipe Gambusia)


All text below is derived from a January 2013 copy of Dr. Timothy Bonner's website at Texas State University. That content was derived primarily from published literature. We are aware of some conflicts with the museum record and the content below will evolve as the new, expanded UT and Texas State Fishes of Texas project team members are able to update it. We invite collaborations to improve and expand the species account content. Please contact us if you wish to help, or if you discover flaws in our species account content that you can address.

Type Locality

See Garrett and Edwards (2003).


Etymology/Derivation of Scientific Name







Maximum size:


Coloration: Predorsal stripe distinct and broad; no dark bands on sides; median fins without large black spots near their bases (Hubbs et al. 2008).


Counts: Dorsal fins 9 (rarely 10; Hubbs et al. 2008).


Body shape: Dorsal fin origin well behind anal fin origin (Hubbs et al. 2008


External morphology: Distal segments of anterior branch of 4th fin ray of gonopodium not coalesced to elbow; spines at tip of 3rd anal fin ray of male gonopodium 4-10 times longer than wide (Hubbs et al. 2008).


Internal morphology: Intestinal canal short with few convolutions (Hubbs et al. 2008).


Distribution (Native and Introduced)

U.S. distribution:


Texas distribution: Restricted to the headwaters of San Felipe Creek, a 15-km tributary of the Rio Grande in the city of Del Rio (Val Verde County; Hubbs et al. 2008).


Abundance/Conservation status (Federal, State, NGO)

Special Concern (Hubbs et al. 2008). Listed as Endangered by the American Fisheries Society; categories of threats: present or threatened destruction, modification, or reduction of habitat or range; and a narrowly restricted range (Jelks et al. 2008).


Habitat Associations

Macrohabitat: Seems to prefer thermally-consistent spring flows (Hubbs et al. 2008).


Mesohabitat: Apparently most common in edge habitats adjacent to flowing waters (Hubbs et al. 2008).



Spawning season:


Spawning habitat:


Spawning behavior:




Age at maturation




Growth and Population structure: 




Food habits:


Phylogeny and morphologically similar fishes

Gambusia clarkhubbsi is a member of the nobilis species group; occurs sympatrically with the Tex-Mex gambusia (G. speciosa; Hubbs et al. 2008).


Host Records



Commercial or Environmental Importance





Garrett, G.P. and R.J. Edwards. 2003. New species of Gambusia (Cyprinodontiformes: Poeciliidae) from Del Rio, Texas. Copeia 2003(4):783-788.


Hubbs, C., R.J. Edwards, and G.P. Garrett. 2008. An annotated checklist of the freshwater fishes of Texas, with keys to identification of species. Texas Journal of Science, Supplement, 2nd edition 43(4):1-87.

Jelks, H.L., S.J. Walsh, N.M. Burkhead, S. Contreras-Balderas, E. Diaz-Pardo, D.A. Hendrickson, J. Lyons, N.E. Mandrak, F. McCormick, J.S. Nelson, S.P. Platania, B.A. Porter, C.B. Renaud, J.J. Schmitter-Soto, E.B. Taylor, and M.L. Warren, Jr. 2008. Conservation status of imperiled North American freshwater and diadromous fishes. Fisheries 33(8):372-407.



There are no records associated with this taxon yet.

iSpecies Data

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Occurences Over Time


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