Potosi pupfish
Cyprinodon alvarezi | |
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Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Actinopterygii |
Order: | Cyprinodontiformes |
Family: | Cyprinodontidae |
Genus: | Cyprinodon |
Species: | C. alvarezi
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Binomial name | |
Cyprinodon alvarezi R. R. Miller, 1976
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Potosi pupfish (Cyprinodon alvarezi) is a species of fish in the family Cyprinodontidae. It is endemic to Mexico, but is now extinct in the wild, only surviving in captivity.[1]
Distribution
The Potosi pupfish is endemic to an isolated spring known as Ojo de Potosi near El Potosi, a settlement in southwestern
Habitat and extinction in the wild
The Potosi pupfish is endemic to a clear spring-fed pool in an
Description
Fin of nuptial male is white, milky or bluish white, the terminal black caudal fin bar is broad (wider than the pupil). Dorsal and anal fin of nuptial male has milky white edge, pelvic is bluish. Pectoral fins are grey-black.
Details on the number and presence of various characteristics of the Potosi pupfish, as collected by R.R. Miller:[6]
Feature | Number/Presence |
Lateral scales | 24-26 (typically 25) |
Gill-rakers | 16-20 (typically 17-19) |
Vertebrae | 26-27 (predominantly 26) |
Mandibular pores | 2 |
Branchiostegal rays | 5-6 |
Scales around Caudal Peduncle | 14-16 (typically 16) |
Scales around body | 30-34 (typically 32) |
Lacrimal pores | 2-5 (typically 4) |
Dorsal-fin ocellus | Well developed in female/juvenile, males of <37mm (SL) may have remnants |
Fin rays:
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Scales:
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Etymology
The Potosi pupfish's scientific name Cyprinodon alvarezi honours Jose Alvarez del Villar (1903-1986) who had originally intended to describe the species, but had given the type, which he had collected in 1952, to Robert Rush Miller who took on the task of describing it.[6][7]
References
- ^ . Retrieved 16 November 2021.
- ^ a b c Contreras Balderas, Salvador; Lozano-Vilano, Lourdes (1996-05-16). "Extinction of most Sandia and Potosí valleys (Nuevo León, Mexico) endemic pupfishes, crayfishes and snails". Ichthyol. Explor. Freshwaters. 7.
- ^ ISBN 978-607-16-4087-1.
- . Retrieved 16 July 2018.
- ^ a b "Cyprinodon alvarezi – Potosí Pupfish". Seriously Fish. Retrieved 2018-07-16.
- ^ a b c Miller, R.R. (1976). "Four new pupfishes of the genus Cyprinodon from Mexico, with a key to the Cyprinodon eximius complex". Bulletin of The Southern California Academy of Sciences. 75 (2): 68–75.
- ^ Christopher Scharpf; Kenneth J. Lazara (8 December 2023). "Order CYPRINODONTIFORMES: Families PANTANODONTIDAE, CYPRINODONTIDAE, PROFUNDULIDAE, GOODEIDAE, FUNDULIDAE and FLUVIPHYLACIDAE". The ETYFish Project Fish Name Etymology Database. Christopher Scharpf and Kenneth J. Lazara. Retrieved 23 March 2024.
External links
- Luke, Karl-Heinz and Lothar Seegers. 1983. Cyprinodon alvarezi Miller 1976. Downloaded on 2 February 2009 (in German).