The Petén molly is a short-finned molly (part of the Poecilia sphenopscomplex) whose scientific name is a matter of some confusion. It was originally described by Günther (1866), who named it Poecilia petenensis. Günther (1866) also described the swordtail molly under the name Mollienesia petenensis. Regan (1913) placed both mollies in the genus Mollienesia, renaming the short-finned species Mollienesia gracilis.[2]
When Rosen and Bailey (1963) revised the poeciliids, they placed both the swordtail and the short-finned molly in the genus Poecilia and made the short-finned species a synonym for Poecilia sphenops. Poeser (2002) revalidated Poecilia petenensis as a separate species, leading to homonymity with the swordtail species, which was duly renamed Poecilia kykesis.[2]
Meyer et al. hold that Poeser (2002) broke nomenclature codes. They argue that the designation Poecilia petenensis should continue to refer to the swordtail molly and that the short-finned molly should instead be named Poecilia gracilis.[3]
The largest examined Poecilia petenensis female measured 119 mm in standard length, while the largest males attained 93 mm. The body is relatively slender, more so than in the otherwise similar species P. teresae, and somewhat higher in the males than in the females. The sides of the fish are spotted, which is more pronounced in females. Larger females exhibit a diamond pattern on their sides. The fins are mostly without pigment.[2]
^Lyons, T.J. (2020). "Poecilia petenensis". The IUCN Red List of Threatened Species. 2020: e.T191752A165014985. doi:10.2305/IUCN.UK.2020-2.RLTS.T191752A165014985.en. Retrieved 22 August 2023.
^ abcdePoeser, Fred N. (2002). "Poecilia kykesis nom. nov., a new name for Mollienesia petenensis Günther, 1866, and redescription, revalidation and the designation of a lectotype for Poecilia petenensis Günther, 1866 (Teleostei: Poeciliidae)". Contributions to Zoology. 70 (4): 243–246. doi:10.1163/18759866-07004005. Retrieved 20 August 2023.
^Meyer, Manfred K.; Schneider, Klaus; Radda, Alfred C.; Wilde, Brigitta; Schartl, Manfred (2005), "A new species of Poecilia, subgenus Mollienesia, from upper río Cahabón system, Guatemala, with remarks on the Nomenclature of Mollienesia petenensis Günther, 1866 (Teleostei: Cyprinodontiformes: Poeciliidae)" (PDF), Zoologische Abhandlungen, Dresden, retrieved 20 August 2023
March 10, 2024
poecilia, petenensis, this, article, about, short, finned, molly, sailfin, molly, previously, known, same, name, poecilia, kykesis, petén, molly, poeciliid, fish, species, endemic, guatemala, petén, mollyconservation, statusdata, deficient, iucn, scientific, c. This article is about the short finned molly For the sailfin molly previously known by the same name see Poecilia kykesis Poecilia petenensis the Peten molly is a poeciliid fish species endemic to Guatemala Peten mollyConservation statusData Deficient IUCN 3 1 1 Scientific classificationDomain EukaryotaKingdom AnimaliaPhylum ChordataClass ActinopterygiiOrder CyprinodontiformesFamily PoeciliidaeGenus PoeciliaSpecies P petenensisBinomial namePoecilia petenensisGunther 1866 Contents 1 Taxonomy 2 Description 3 Distribution 4 ReferencesTaxonomy editThe Peten molly is a short finned molly part of the Poecilia sphenops complex whose scientific name is a matter of some confusion It was originally described by Gunther 1866 who named it Poecilia petenensis Gunther 1866 also described the swordtail molly under the name Mollienesia petenensis Regan 1913 placed both mollies in the genus Mollienesia renaming the short finned species Mollienesia gracilis 2 When Rosen and Bailey 1963 revised the poeciliids they placed both the swordtail and the short finned molly in the genus Poecilia and made the short finned species a synonym for Poecilia sphenops Poeser 2002 revalidated Poecilia petenensis as a separate species leading to homonymity with the swordtail species which was duly renamed Poecilia kykesis 2 Meyer et al hold that Poeser 2002 broke nomenclature codes They argue that the designation Poecilia petenensis should continue to refer to the swordtail molly and that the short finned molly should instead be named Poecilia gracilis 3 Naming history 2 Common name Gunther 1866 Regan 1913 Hubbs 1935 Rosen amp Bailey 1963 Brett amp Turner 1983 Poeser 2002 Peten molly Poecilia petenensis Mollienesia gracilis Mollienesia sphenops gracilis Poecilia sphenops Poecilia gracilis Poecilia petenensisSwordtail molly Mollienesia petenensis unchanged unchanged Poecilia petenensis unchanged Poecilia kykesisDescription editThe largest examined Poecilia petenensis female measured 119 mm in standard length while the largest males attained 93 mm The body is relatively slender more so than in the otherwise similar species P teresae and somewhat higher in the males than in the females The sides of the fish are spotted which is more pronounced in females Larger females exhibit a diamond pattern on their sides The fins are mostly without pigment 2 Distribution editPoecilia petenensis is endemic to the freshwater Lake Peten Itza in Guatemala 2 References edit Lyons T J 2020 Poecilia petenensis The IUCN Red List of Threatened Species 2020 e T191752A165014985 doi 10 2305 IUCN UK 2020 2 RLTS T191752A165014985 en Retrieved 22 August 2023 a b c d e Poeser Fred N 2002 Poecilia kykesis nom nov a new name for Mollienesia petenensis Gunther 1866 and redescription revalidation and the designation of a lectotype for Poecilia petenensis Gunther 1866 Teleostei Poeciliidae Contributions to Zoology 70 4 243 246 doi 10 1163 18759866 07004005 Retrieved 20 August 2023 Meyer Manfred K Schneider Klaus Radda Alfred C Wilde Brigitta Schartl Manfred 2005 A new species of Poecilia subgenus Mollienesia from upper rio Cahabon system Guatemala with remarks on the Nomenclature of Mollienesia petenensis Gunther 1866 Teleostei Cyprinodontiformes Poeciliidae PDF Zoologische Abhandlungen Dresden retrieved 20 August 2023 Retrieved from https en wikipedia org w index php title Poecilia petenensis amp oldid 1184176917, wikipedia, wiki, book, books, library,
