Actinopteri (ray-finned fishes) > Cyprinodontiformes
(Rivulines, killifishes and live bearers) > Cyprinodontidae
(Pupfishes) > Cyprinodontinae
Etymology: Cyprinodon: Latin, cyprinus = carp + Greek, odous = teeth (Ref. 45335). More on authors: Baird & Girard.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; benthopelagic; pH range: 7.5 - 8.0; dH range: 13 - 19; depth range - m (Ref. ), usually - m (Ref. ). Subtropical; 25°C - 35°C (Ref. 1672); 34°N - 31°N
North America: lower Colorado River drainage, including Gila River system and south through southern Arizona and California, USA (including Salton Sea) into northern Mexico.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 5.0 cm TL male/unsexed; (Ref. 27139); max. reported age: 2.00 years (Ref. 12193)
Usually occurs over mud or sand in springs, marshes, lakes and pools of creeks. 7.2 cm max TL (Ref. 5723). Not a seasonal killifish. Is difficult to maintain in aquarium (Ref. 27139). Also occur in hot springs with temperatures up to 45°C and salinities up to 20% (Ref. 13371).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Huber, J.H., 1996. Killi-Data 1996. Updated checklist of taxonomic names, collecting localities and bibliographic references of oviparous Cyprinodont fishes (Atherinomorpha, Pisces). Société Française d'Ichtyologie, Muséum National d'Histoire Naturelle, Paris, France, 399 p. (Ref. 27139)
IUCN Red List Status (Ref. 124695)
Vulnerable (VU) (B1ab(ii,iii)+2ab(ii,iii)); Date assessed: 08 February 2019
Threat to humans
Fisheries: of no interest; aquarium: commercial
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01349 (0.00591 - 0.03081), b=3.14 (2.95 - 3.33), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 2.7 ±0.2 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (tmax=2).
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .