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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.
ขนาด / น้ำหนัก / อายุ
วัยเจริญพันธุ์: Lm? range ? - ? cm Max length : 7.8 cm TL เพศผู้/กระเทย; (Ref. 86798); common length : 4.5 cm TL เพศผู้/กระเทย; (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).
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)
สถานะบัญชีแดงของ IUCN (Ref. 130435: Version 2025-2 (Global))
เปราะบาง (VU) (B1ab(iii)+2ab(iii)); Date assessed: 22 November 2011
ดัชนีความหลากหลายทางวิวัฒนาการ (อ้างอิง 82804): PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01349 (0.00599 - 0.03039), b=3.14 (2.95 - 3.33), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
ระดับชั้นอาหาร (อ้างอิง 69278): 2.1 ±0.0 se; based on diet studies.
ความเสี่ยงต่อการตกปลา (Ref. 59153): Low vulnerability (10 of 100). 🛈
