Blackfin pupfish

Blackfin pupfish (Cyprinodon beltrani) is a species of fish in the family Cyprinodontidae. This pupfish is endemic to Lake Chichancanab in Quintana Roo, Mexico. In almost all places, different Cyprinodon species do not overlap in their range, but there are two notable exceptions and one of these is Lake Chichancanab, which is inhabited by C. beltrani, C. esconditus, C. labiosus, C. maya, C. simus, C. suavium and C. verecundus (the other place where several Cyprinodon species live together are lakes in San Salvador Island, the Bahamas).[2] Among the endemic Cyprinodon species in Lake Chichancanab, only C. beltrani and C. labiosus still occur in some numbers in their habitat, while the remaining are virtually—if not fully—extinct in the wild (at least some of these still survive in captivity).[2][3] This species feeds on detritus.[4] Compared to the other species of pupfish mentioned previously, the C. beltrani prefer a different feeding substrate (which is sand).[5] In regards to mating, the female blackfin pupfish seems to mate with other species of pupfish and not just the C. beltrani. The male blackfin pupfish have similar markings and courting behaviors to other pupfish in their habitat.[6] The person honored in the specific name of this pupfish is the Mexican biologist Enrique Beltrán Castillo (1903–1994) to mark his quarter century of being a biologist.[7]

Blackfin pupfish
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Cyprinodontiformes
Family: Cyprinodontidae
Genus: Cyprinodon
Species:
C. beltrani
Binomial name
Cyprinodon beltrani
Álvarez, 1949

References
  1. Contreras MacBeath, T.; Schmitter-Soto, J. (2019). "Cyprinodon beltrani". IUCN Red List of Threatened Species. 2019: e.T6146A3104812. doi:10.2305/IUCN.UK.2019-2.RLTS.T6146A3104812.en. Retrieved 17 November 2021.
  2. Martin, C.; P.C. Wainwright (2011). "Trophic novelty is linked to exceptional rates of morphological diversification in two adaptive radiations of Cyprinodon pupfish". Evolution. 65 (8): 2197–2212. doi:10.1111/j.1558-5646.2011.01294.x. PMID 21790569.
  3. Strecker, U. (2006). "The impact of invasive fish on an endemic Cyprinodon species flock (Teleostei) from Laguna Chichancanab, Yucatan, Mexico". Ecology of Freshwater Fish. 15 (4): 408–418. doi:10.1111/j.1600-0633.2006.00159.x.
  4. Froese, Rainer; Pauly, Daniel (eds.) (2019). "Cyprinodon beltrani" in FishBase. August 2019 version.
  5. Horstkotte, Joachim; Plath, Martin (December 2008). "Divergent evolution of feeding substrate preferences in a phylogenetically young species flock of pupfish (Cyprinodon spp.)". Naturwissenschaften. 95 (12): 1175–1180. Bibcode:2008NW.....95.1175H. doi:10.1007/s00114-008-0439-z. ISSN 0028-1042. PMID 18712336. S2CID 6750576.
  6. STRECKER, ULRIKE; KODRIC-BROWN, ASTRID (December 2000). "Mating preferences in a species flock of Mexican pupfishes (Cyprinodon, Teleostei)". Biological Journal of the Linnean Society. 71 (4): 677–687. doi:10.1111/j.1095-8312.2000.tb01285.x. ISSN 0024-4066.
  7. Christopher Scharpf; Kenneth J. Lazara (26 April 2019). "Order CYPRINODONTIFORMES: Families PANTANODONTIDAE, CYPRINODONTIDAE, PROFUNDULIDAE, GOODEIDAE, FUNDULIDAE and FLUVIPHYLACIDAE". The ETYFish Project Fish Name Etymology Database. Christopher Scharpf and Kenneth J. Lazara. Retrieved 13 October 2019.


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