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The glass knifefish (Eigenmannia virescens) is a weakly electric freshwater fish found across South America.[1] It is marketed as an aquarium fish.

Eigenmannia virescens
Eigenmannia virescens
Eigenmannia virescens head
Scientific classification
Kingdom:
Animalia
Phylum:
Chordata
Class:
Actinopterygii
Order:
Gymnotiformes
Family:
Sternopygidae
Genus:
Eigenmannia
Species:
E. virescens
Binomial name
Eigenmannia virescens
( Valenciennes, 1847)
Synonyms
  • Stermarchus viriscens Valenciennes, 1847
  • Sternopygus lineatus Müller & Troschel, 1849
  • Sternopygus tumifrons Müller & Troschel, 1849

Description


The appendix on the body has black lines running through the bottom of the sides, with the most intense line running on the anal fin.

Like all members of its order, it is distinguished by its ability to produce electric fields. This is achieved by discharging an electric organ in the tail.[2]


Distribution


This species is widely distributed in the rivers of South America. Their range extends from the Magdalena River basin in Colombia to the Rio de La Plata in Argentina, including Peru, Bolivia, Paraguay, Uruguay, Brazil, Venezuela, Guyana, and Surinam.[1]


See also



References


  1. James S. Albert; Roberto E. Reis (6 February 2011). Historical Biogeography of Neotropical Freshwater Fishes. University of California Press. pp. 248–. ISBN 978-0-520-94850-1.
  2. Günther K. H. Zupanc (13 May 2010). Behavioral Neurobiology: An Integrative Approach. Oxford University Press. pp. 179–. ISBN 978-0-19-920830-2.


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