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Overview

Distribution

Central America: Grijalva system, Mexico.
  • Jelks, H.L., S.J. Walsh, N.M. Burkhead, S. Contreras-Balderas, E. Díaz-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. (Ref. 81264)   http://www.fishbase.org/references/FBRefSummary.php?id=81264&speccode=11953 External link.
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Baños de Azufre, Atlantic Slope of Mexico.
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Physical Description

Size

Maximum size: 35 mm TL
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Max. size

3.5 cm TL (male/unsexed; (Ref. 50894))
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Type Information

Paratype for Gambusia eurystoma Miller
Catalog Number: USNM 211263
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): R. Miller & R. Schultz
Year Collected: 1959
Locality: Mexico: Arroyo Del Azufre At Banos De Azufre, 10 km W. of Teapa, Tabasco. Elev. 150 m, Tabasco, Mexico, North America
  • Paratype: Miller, R. R. 1975. Occasional Papers of the Museum of Zoology, University of Michigan. No. 672: 19.
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Ecology

Habitat

Habitat and Ecology

Systems
  • Freshwater
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Environment

benthopelagic; non-migratory; freshwater; pH range: 7.2 - 7.8; dH range: 5 - 20
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
CR
Critically Endangered

Red List Criteria
A1ac+2ce, B1+2ac, C2b

Version
2.3

Year Assessed
1996
  • Needs updating

Assessor/s
Contreras-Balderas, S. & Almada-Villela, P.

Reviewer/s

Contributor/s

History
  • 1994
    Rare
    (Groombridge 1994)
  • 1990
    Rare
    (IUCN 1990)
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Threats

Critically Endangered (CR) (A1ac+2ce, B1+2ac, C2b)
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Wikipedia

Widemouth gambusia

The widemouth gambusia (Gambusia eurystoma) is a species of freshwater fish. It is a member of the family Poeciliidae of the order Cyprinodontiformes. It is native to Mexico.

This species reaches a maximum overall length of approximately 3.5 cm (1.4 in).

Little is known about G. eurystoma, but IUCN classifies it as Critically Endangered on the basis of a very small (less than 250 individuals) and rapidly falling population and a small, localized, and diminishing geographical distribution.

References

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