''Megadontognathus'' is a genus of
ghost knifefish
The ghost knifefishes are a family, Apteronotidae, of ray-finned fishes in the order Gymnotiformes. These fish are native to Panama and South America. They inhabit a wide range of freshwater habitats, but more than half the species in the family ...
es found in river rapids in
tropical
The tropics are the regions of Earth surrounding the Equator. They are defined in latitude by the Tropic of Cancer in the Northern Hemisphere at N and the Tropic of Capricorn in
the Southern Hemisphere at S. The tropics are also referred to ...
South America
South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere at the northern tip of the continent. It can also be described as the southe ...
. They are brown with a stubby snout and reach about in total length.
Species
There are currently two described species in this genus:
* ''
Megadontognathus cuyuniense''
Mago-Leccia, 1994
* ''
Megadontognathus kaitukaensis''
Campos-da-Paz, 1999
References
Apteronotidae
Fish of South America
Freshwater fish genera
Taxa named by Francisco Mago Leccia
{{Gymnotiformes-stub