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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; ,br>
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.
Taille / Poids / Âge
Maturité: Lm? range ? - ? cm Max length : 7.8 cm TL mâle / non sexé; (Ref. 86798); common length : 4.5 cm TL mâle / non sexé; (Ref. 12193)
Adults occur 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). Migratory behaviour is undetermined (Ref. 126106).
Cycle de vie et comportement reproducteur Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
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).
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)
Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2025-2 (Global))
Vulnérable (VU) (B1ab(iii)+2ab(iii)); Date assessed: 22 November 2011
Dynamique des populations Paramètres de croissance Âges / tailles maximales Longueur-poids rel. Rel. longueur-longueur. Fréquences de longueurs Conversion de masse Recrutement Abondance
Cycle de vie Reproduction Maturité Maturité/épines rel. Fécondité Frai Agrégats de frai Œufs Développement de l'œuf Larves Dynamique des populations larvaires
Physiologie Composition corporelle Nutriments Consommation d'oxygène Type de natation Vitesse de nage Pigments visuels Son de poisson Maladies et parasites Toxicité (CL50)
