Pterolebias

Pterolebias is a genus of killifish from the family Rivulidae which are native to temporary swamps and ponds in South America. It includes two groups, which sometimes are regarded as separate genera: Pterolebias (sensu stricto) from the southern Amazon and Paraguay (including the Pantanal) river basins, and Gnatholebias from the Orinoco (including the Llanos) river basin.[2]

Pterolebias
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Cyprinodontiformes
Family: Rivulidae
Genus: Pterolebias
Garman, 1895
Type species
Pterolebias longipinnis
Garman, 1895[1]
Synonyms

Gnatholebias W. J. E. M. Costa, 1998

Depending on the exact species, these annual killifish reach up to 7–12 cm (2.8–4.7 in) in total length.[3]

Species

There are four recognized species in Pterolebias according to FishBase,[3] but two of these are sometimes placed in a separate genus, Gnatholebias. The two groups are relatively distantly related and if kept in a single genus Pterolebias is paraphyletic.[2][4]

  • Pterolebias (sensu stricto)
    • Pterolebias longipinnis Garman, 1895 (Longfin killie)
    • Pterolebias phasianus W. J. E. M. Costa, 1988
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References
  1. Eschmeyer, W. N.; R. Fricke & R. van der Laan (eds.). "Pterolebias". Catalog of Fishes. California Academy of Sciences. Retrieved 12 September 2019.
  2. Costa, W.J.E.M. (2005). "The Neotropical annual killifish genus Pterolebias Garman (Teleostei: Cyprinodontiformes: Rivulidae): phylogenetic relationships, descriptive morphology, and taxonomic revision". Zootaxa. 1067 (1). doi:10.11646/zootaxa.1067.1.1.
  3. Froese, Rainer and Pauly, Daniel, eds. (2018). Species of Pterolebias in FishBase. October 2018 version.
  4. Costa, W.J.E.M. (2014). "Phylogeny and evolutionary radiation in seasonal rachovine killifishes: biogeographical and taxonomical implications". Vertebrate Zoology. 64 (2): 177–192.


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