Sternarchogiton nattereri

Sternarchogiton nattereri

Mature males grow external jaw teeth

Tropical
Southern Hemisphere
Regional distribution
Freshwater fish
South America
Medium
Tropical fish

Sternarchogiton nattereri is a species of weakly electric knifefish in the family Apteronotidae. It is native to the Amazon River system and feeds on sponges. Unlike other members of the genus Sternarchogiton, there is pronounced sexual dimorphism in S. nattereri, with reproductively mature males developing strong external teeth on tips of their jaws.

Class: Teleosts
Order: Neotropical Knifefishes
Family: Apteronotidae
Genus: Sternarchogiton
Water type: Freshwater