Eigenmannia

Eigenmannia is a genus of fish in the family Sternopygidae (glass knifefishes) native to tropical and subtropical South America (south to the Río de la Plata Basin), and Panama.[1][2] They are typically found in slow-flowing streams, along the edge of large rivers, in deep river channels and in floodplains, and the genus also includes E. vicentespelaea, the only cave-adapted knifefish.[2][3] Eigenmannia are often found near submerged roots, aquatic plants and floating meadows.[3][4]

Eigenmannia
Eigenmannia virescens
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Gymnotiformes
Family: Sternopygidae
Genus: Eigenmannia
D. S. Jordan & Evermann, 1896
Type species
Sternopygus humboldtii
Steindachner, 1878

Depending on the exact species, they have a maximum total length of 14.3–49.6 cm (6–20 in).[1] They are nocturnal, and feed on small invertebrates such as aquatic insect larvae and zooplanktonic crustaceans.[3]

Species

These are the currently recognized species in this genus:[1][5]

  • Eigenmannia antonioi L. A. W. Peixoto, Dutra & Wosiacki, 2015[2]
  • Eigenmannia besouro L. A. W. Peixoto & Wosiacki, 2016[6]
  • Eigenmannia bumba Dutra, Ramos & Menezes, 2022[7]
  • Eigenmannia cacuria Dutra, Ramos & Menezes, 2022[7]
  • Eigenmannia correntes Campos-da-Paz & Queiroz, 2017[8]
  • Eigenmannia desantanai L. A. W. Peixoto, Dutra & Wosiacki, 2015[2]
  • Eigenmannia dutrai L. A. W. Peixoto, M. N. L. PASTANA, & Ballen, 2020[9]
  • Eigenmannia goajira L. P. Schultz, 1949[10]
  • Eigenmannia guairaca L. A. W. Peixoto, Dutra & Wosiacki, 2015[2]
  • Eigenmannia humboldtii (Steindachner, 1878)
  • Eigenmannia limbata (Schreiner & A. Miranda-Ribeiro, 1903)
  • Eigenmannia loretana Waltz & Albert, 2018[11]
  • Eigenmannia macrops (Boulenger, 1897)
  • Eigenmannia matintapereira L. A. W. Peixoto, Dutra & Wosiacki, 2015[2]
  • Eigenmannia meeki Dutra, de Santana & Wosiacki, 2017[12]
  • Eigenmannia microstoma (J. T. Reinhardt, 1852)
  • Eigenmannia muirapinima L. A. W. Peixoto, Dutra & Wosiacki, 2015[2]
  • Eigenmannia nigra Mago-Leccia, 1994
  • Eigenmannia oradens Dutra, L. A. W. Peixoto, de Santana & Wosiacki, 2018[13]
  • Eigenmannia pavulagem L. A. W. Peixoto, Dutra & Wosiacki, 2015[2]
  • Eigenmannia robsoni Dutra, Ramos & Menezes, 2022[7]
  • Eigenmannia sayona L. A. W. Peixoto & Waltz, 2017[14]
  • Eigenmannia sirius L. A. W. Peixoto & Waltz, 2019[15]
  • Eigenmannia trilineata R. B. López & Castello, 1966
  • Eigenmannia vicentespelaea Triques, 1996
  • Eigenmannia virescens (Valenciennes, 1836)
  • Eigenmannia waiwai L. A. W. Peixoto, Dutra & Wosiacki, 2015[2]

References
  1. Froese, Rainer and Pauly, Daniel, eds. (2019). Species of Eigenmannia in FishBase. August 2019 version.
  2. Peixoto, L.A.W., Dutra, G.M. & Wosiacki, W.B. (2015). The Electric Glass Knifefishes of the Eigenmannia trilineata species-group (Gymnotiformes: Sternopygidae): monophyly and description of seven new species. Zoological Journal of the Linnean Society, 175 (2): 384–414.
  3. van der Sleen, P.; J.S. Albert, eds. (2017). Field Guide to the Fishes of the Amazon, Orinoco, and Guianas. Princeton University Press. pp. 343–344. ISBN 978-0691170749.
  4. Carvalho, L.N.; L. Fidelis; R. Arruda; A. Galuch; K. Zuanon (2013). "Second floor, please: the fish fauna of floating litter banks in Amazonian streams and rivers". Neotrop. Ichthyol. 11 (1): 78–91. doi:10.1590/S1679-62252013000100010.
  5. Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Species in the genus Eigenmannia". Catalog of Fishes. California Academy of Sciences. Retrieved 31 August 2019.
  6. Peixoto, L.A.W. & Wosiacki, W.B. (2016): Eigenmannia besouro, a new species of the Eigenmannia trilineata species-group (Gymnotiformes: Sternopygidae) from the rio São Francisco basin, northeastern Brazil. Zootaxa, 4126 (2): 262–270.
  7. Dutra, Guilherme Moreira; Ramos, Telton Pedro Anselmo; Menezes, Naércio Aquino (2022). "Description of three new species of Eigenmannia (Gymnotiformes: Sternopygidae) from the rio Mearim and rio Parnaíba basins, Northeastern Brazil". Neotropical Ichthyology. 20 (1): e210117. doi:10.1590/1982-0224-2021-0117.
  8. Campos-Da-Paz, R. & Queiroz, I.R. (2017): A new species of Eigenmannia Jordan and Evermann (Gymnotiformes: Sternopygidae) from the upper rio Paraguai basin. Zootaxa, 4216 (1): 73-84.
  9. Peixoto, L. A. W., Pastana, M. N. L., & Ballen, G. A. (2020). New species of glass knifefish genus Eigenmannia (Gymnotiformes: Sternopygidae) with comments on the morphology and function of the enlarged cephalic lateral‐line canals of Sternopygidae. Journal of Fish Biology. doi:10.1111/jfb.14564
  10. Dutra, G.M., Santana, C.D.d., Vari, R.P. & Wosiacki, W.B. (2014): The South American Electric Glass Knifefish Genus Distocyclus (Gymnotiformes: Sternopygidae): Redefinition and Revision. Copeia, 2014 (2): 345-354.
  11. Waltz, B.T. & Albert, J.T. (2018): New Species of Glass Knifefish Eigenmannia loretana (Gymnotiformes: Sternopygidae) from the Western Amazon Zootaxa 4399(3): 399–411. doi:10.11646/zootaxa.4399.3.9
  12. Dutra, G.M.; C.D. de Santana; W.B. Wosiacki (2017). "A new species of the glass electric knifefish genus Eigenmannia Jordan and Evermann (Teleostei: Gymnotiformes: Sternopygidae) from Río Tuíra basin, Panama". Copeia. 105 (1): 85–91. doi:10.1643/CI-16-439. S2CID 90571735.
  13. Dutra, G.M.; L.A.W. Peixoto; C.D. de Santana; W.B. Wosiacki (2018). "A new species of Eigenmannia Jordan & Evermann (Teleostei: Gymnotiformes: Sternopygidae) from Río Ventuari, Venezuela". Zootaxa. 4422 (1): 132–140. doi:10.11646/zootaxa.4422.1.8. PMID 30313516.
  14. Peixoto, Luiz A. W.; Waltz, Brandon T. (2017). "A new species of the Eigenmannia trilineata (Gymnotiformes: Sternopygidae) species group from the río Orinoco basin, Venezuela". Neotropical Ichthyology. 15 (1): e150199. doi:10.1590/1982-0224-20150199.
  15. Peixoto, L.A.W.; W.M. Ohara (2019). "A new species of Eigenmannia Jordan & Evermann (Gymnotiformes: Sternopygidae) from Rio Tapajós, Brazil, with discussion on its species group and the myology within Eigenmanniinae". PLOS ONE. 14 (8): e0220287. Bibcode:2019PLoSO..1420287P. doi:10.1371/journal.pone.0220287. PMC 6693845. PMID 31412067.
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