Overview

Distribution

North America: Río Conchos, Mexico.
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Ojo de San Gregoria and adjacent creek, Mexico.
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Physical Description

Size

Max. size

3.0 cm TL (male/unsexed; (Ref. 12468)); 4 cm TL (female)
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Type Information

Paratype for Gambusia alvarezi Hubbs & Springer
Catalog Number: USNM 164253
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): O. Wiegand & C. Hubbs
Year Collected: 1954
Locality: Mexico, Chihuahua, Ojo de San Gregorio, 12 mi. ENE Parral, Chihuahua, Mexico, North America
  • Paratype: Hubbs, C. & Springer, V. G. 1957. Texas Journal of Science. 9 (3): 310, 14a-d.
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Ecology

Habitat

Habitat and Ecology

Systems
  • Freshwater
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Environment

benthopelagic; non-migratory; freshwater; pH range: 7.5; dH range: 10 - 15
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
VU
Vulnerable

Red List Criteria
A1ce+2ce, B1+2c, C2b, D2

Version
2.3

Year Assessed
1996
  • Needs updating

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

Reviewer/s

Contributor/s

History
  • 1994
    Vulnerable
    (Groombridge 1994)
  • 1990
    Vulnerable
    (IUCN 1990)
  • 1988
    Rare
    (IUCN Conservation Monitoring Centre 1988)
  • 1986
    Rare
    (IUCN Conservation Monitoring Centre 1986)
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Threats

Vulnerable (VU) (A1ce+2ce, B1+2c, C2b, D2)
  • IUCN 2006 2006 IUCN red list of threatened species. www.iucnredlist.org. Downloaded July 2006.
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Wikipedia

Yellowfin Gambusia

Gambusia alvarezi (yellowfin gambusia or guayacon de san gregorio) is a species of fish in the Poeciliidae family. It is endemic to Mexico.

References[edit]

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