Cyprinodon nevadensis  Eigenmann & Eigenmann, 1889

Amargosa pupfish
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Actinopterygii (ray-finned fishes) > Cyprinodontiformes (Rivulines, killifishes and live bearers) > Cyprinodontidae (Pupfishes) > Cyprinodontinae
Etymology: Cyprinodon: Latin, cyprinus = carp + Greek, odous = teeth (Ref. 45335).

Environment / Climate / Range Ecology

Freshwater; benthopelagic; pH range: 7.5 - 8.0; dH range: 13 - 19.   Subtropical; 18°C - 32°C (Ref. 1672); 37°N - 36°N

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

North America: Amargosa River basin in Nevada and California, USA. Six subspecies were recognized: Cyprinodon nevadensis nevadensis, restricted to Saratoga Springs and adjoining lakes, Death Valley National Monument in California; Cyprinodon nevadensis amargosae, restricted to Amargosa River in California; Cyprinodon nevadensis calidae, now extinct, in outlets of North and South Tecopa Hot Springs in California; Cyprinodon nevadensis shoshone , in outlet of Shoshone Springs in California; Cyprinodon nevadensis mionectes, in large springs in lower Ash Meadows in Nevada; Cyprinodon nevadensis pectoralis, in small springs in hills around Devils Hole, upper Ash Meadows in Nevada.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 7.8 cm TL male/unsexed; (Ref. 86798); common length : 4.5 cm TL male/unsexed; (Ref. 12193)

Biology     Glossary (e.g. epibenthic)

Occurs in springs, their effluents, and spring-fed ponds and lakes (Ref. 5723, 86798). Not a seasonal killifish. Is difficult to maintain in aquarium (Ref. 27139).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Its reproductive strategies differ from many spring-dwelling pupfishes. Cyprinodon n. amargosae is a group spawner. Males do not establish and defend territories as do males of spring-dwelling subspecies. Instead, a reproductive male usually directs a receptive female to the periphery of the group where spawning occurs, although spawning may even take place in the center of the group (www.death-valley.us).

Main reference Upload your references | References | Coordinator : Costa, Wilson J.E.M. | Collaborators

Page, L.M. and B.M. Burr, 2011. A field guide to freshwater fishes of North America north of Mexico. Boston : Houghton Mifflin Harcourt, 663p. (Ref. 86798)

IUCN Red List Status (Ref. 115185)

  Vulnerable (VU) (B1ab(iii)+2ab(iii))

CITES (Ref. 94142)

Not Evaluated

Threat to humans

  Harmless




Human uses

Aquarium: commercial
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Internet sources

Alien/Invasive Species database | BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | ECOTOX | Faunafri | Fishes of Iran | Fishtrace | GenBank(genome, nucleotide) | GloBI | GOBASE | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Scirus | SeaLifeBase | Tree of Life | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01047 (0.00473 - 0.02317), b=3.23 (3.05 - 3.41), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic Level (Ref. 69278):  2.1   ±0.0 se; Based on diet studies.
Resilience (Ref. 69278):  High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153):  Low vulnerability (16 of 100) .