Notropis orca


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Notropis orca
Species Authority: Woolman, 1894
Common Name(s):
English Phantom Shiner

Assessment Information [top]

Red List Category & Criteria: Extinct ver 3.1
Year Published: 2013
Date Assessed: 2012-08-04
Assessor(s): NatureServe
Reviewer(s): Smith, K. & Darwall, W.R.T.
Facilitator/Compiler(s): Hammerson, G.A. & Ormes, M.
This species is listed as Extinct because it has not been detected since 1975, despite adequate surveys.
1996 Extinct

Geographic Range [top]

Range Description: This species' historical range extended from the upper Rio Grande of New Mexico, near Isleta, to the mouth of the river. The species is now apparently extinct; it was last collected in 1975. A single specimen from the lower Rio Grande (at Ciudad Diaz Ordaz, Tamaulipas) (Chernoff et al. 1982) was the only record during the last 60 years.
Regionally extinct:
Mexico; United States
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: No occurrences, subpopulations, or locations for this species remain today.

Habitat and Ecology [top]

Habitat and Ecology: Its habitat included the main channel of the Rio Grande, usually over sand and often in turbid water (Page and Burr 2011).
Systems: Freshwater

Use and Trade [top]

Use and Trade: This species was not utilized.

Threats [top]

Major Threat(s): The decline of this species probably was due to water diversion, dams and their impoundments (and loss of unstable flood-drought regime formerly characteristic of the Rio Grande), chemical pollution, salinity increase correlated with irrigation projects, and introduced fishes (Miller et al. 1989).

Conservation Actions [top]

Conservation Actions: This species is extinct.

Citation: NatureServe 2013. Notropis orca. The IUCN Red List of Threatened Species. Version 2015.2. <>. Downloaded on 28 August 2015.
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