Sternopygus
Sternopygus aequilabiatus
Scientific classification
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Sternopygus

Sternopygus is a genus of glass knifefishes found in tropical and subtropical South America (south to the Río de la Plata Basin), and Panama. They inhabit a wide range of freshwater habitats, from fast-flowing rivers to essentially static waters in floodplains, and shallow habitats to the bottom of deep rivers. S. macrurus will even visit brackish mangrove to feed.[1]

They are medium to large knifefish, with a maximum total length of 23–140 cm (0.8–4.6 ft) depending on the exact species.[1][2] They feed on invertebrates, small fish and fruits.[1] Most members of Gymnotiformes are nocturnal, but Sternopygus are both nocturnal[1] and diurnal.[3]

Species

There are currently eleven recognized species in this genus.[2][4][5]

References

  1. 1 2 3 4 van der Sleen, P.; J.S. Albert, eds. (2017). Field Guide to the Fishes of the Amazon, Orinoco, and Guianas. Princeton University Press. pp. 344–345. ISBN 978-0691170749.
  2. 1 2 Froese, Rainer and Pauly, Daniel, eds. (2017). Species of Sternopygus in FishBase. December 2017 version.
  3. Galvis; Mojica; Duque; Castellanos; Sánchez-Duarte; Arce; Gutiérrez; Jiménez; Santos; Vejarano; Arbeláez; Prieto; Leiva (2006). Peces del medio Amazonas, Región de Leticia (in Spanish). Conservación Internacional. p. 358. doi:10.1590/S1679-62252006000400011. ISBN 978-958-97690-6-5.
  4. Torgersen, Kevin T.; Albert, James S. (November 2022). "A New Species of Sternopygus (Gymnotiformes: Sternopygidae) from the Atlantic Coast of the Guiana Shield". Ichthyology & Herpetology. 110 (4): 714–727. doi:10.1643/i2022013. ISSN 2766-1512.
  5. Eschmeyer, W.N.; R. Fricke; R. van der Laan (8 May 2018). "Catalog of Fishes". California Academy of Sciences. Retrieved 8 May 2018.


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