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Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Gymnotiformes
Family: Apteronotidae
Genus: Megadontognathus

Megadontognathus is a genus of ghost knifefishes found in river rapids in tropical South America. They are brown with a stubby snout and reach about 20–25 cm (8–10 in) in total length.[1]


There are currently two described species in this genus:[2]


  1. ^ van der Sleen, P.; J.S. Albert, eds. (2017). Field Guide to the Fishes of the Amazon, Orinoco, and Guianas. Princeton University Press. p. 327. ISBN 978-0691170749. 
  2. ^ Froese, Rainer, and Daniel Pauly, eds. (2011). Species of Megadontognathus in FishBase. October 2011 version.