Santa Cruz pupfish (Cyprinodon arcuatus)

Scientific name: Cyprinodon arcuatus Minckley & Miller, 2002

The Santa Cruz pupfish (Cyprinodon arcuatus) is a freshwater fish of the family Cyprinodontidae. Native range: North America, restricted to the upper Santa Cruz basin in southern Arizona and Northern Sonora.

Biology

Dorsal soft rays (total): 9-10; Anal soft rays: 9 - 11; Vertebrae: 25 - 27. Distinct dorsal-body surface, which is highly convex before the dorsal fin but changing abruptly at the dorsal origin into a deep, postdorsal concavity most developed in breeding males; absence in nuptial males of distinctive yellow or orange pigment on either the caudal fin or peduncle; weak development of lepidodonts and modally six preopercular pores.

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name
Cyprinodon arcuatus
Family
Cyprinodontidae (Pupfishes)
Order
Cyprinodontiformes (Live bearers, Killifishes and Rivulines)
Class
Actinopterygii (Ray-finned fishes)
Maximum length
4.6
Environment
Freshwater; benthopelagic
Climate
Temperate
Distribution
North America: restricted to the upper Santa Cruz basin in southern Arizona and Northern Sonora.
Conservation status (IUCN)
Not Evaluated
Threat to humans
Harmless
Resilience
Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.)

Sources

Taxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.

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