Pacifastacus nigrescens
| Pacifastacus nigrescens | |
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| Species: | P. nigrescens
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| Pacifastacus nigrescens (Stimpson, 1857)
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Pacifastacus nigrescens is a species of crayfish in the family Astacidae. It is endemic to the United States.
Source
- American Fisheries Society Endangered Species Committee 1996. Pacifastacus nigrescens. 2006 IUCN Red List of Threatened Species. Downloaded on 10 August 2007.
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