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Cyprinodon arcuatus

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Cyprinodon arcuatus
Extinct
Extinct (2011) (IUCN 3.1)[1]
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Division: Teleostei
Order: Cyprinodontiformes
Family: Cyprinodontidae
Genus: Cyprinodon
Species:
†C. arcuatus
Binomial name
†Cyprinodon arcuatus

Cyprinodon arcuatus (Santa Cruz pupfish) is a species of fish in the family Cyprinodontidae. It was endemic to the Santa Cruz River in Arizona. It was last seen in 1973 and was declared extinct in 2011.

Description

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The Santa Cruz pupfish exhibited sexual dimorphism in size, with males averaging 37mm (1.46in) in length and females averaging 32mm (1.26in) in length.[2] Coloration in breeding males was dark green to black with alternating stripes of light and dark. Female and non-breeding males were reported to have clear fins except for a black dorsal fin. C. arcuatus is differentiated from other Cyprinodon species by a highly convex dorsal body and concave post-dorsal body, as well a lack of orange or yellow in breeding males' fins.

References

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  1. ↑ NatureServe (2013). "Cyprinodon arcuatus". IUCN Red List of Threatened Species. 2013 e.T202375A15362268. doi:10.2305/IUCN.UK.2013-1.RLTS.T202375A15362268.en. Retrieved 20 November 2021.
  2. ↑ W. L. Minckley; Robert Rush Miller; Steven Mark Norris (August 2002). "Three New Pupfish Species, Cyprinodon (Teleostei, Cyprinodontidae), from Chihuahua, México, and Arizona, USA". Copeia. 2002 (3): 687–705. doi:10.1643/0045-8511(2002)002[0687:TNPSCT]2.0.CO;2. S2CID 86231603.