Nematobrycon

Nematobrycon is a genus of characins endemic to the Atrato and San Juan River basins in western Colombia. The two described species in this genus are very popular aquarium fish.

Species

 * Nematobrycon lacortei S. H. Weitzman & W. L. Fink, 1971 (rainbow tetra)
 * Nematobrycon palmeri C. H. Eigenmann, 1911 (emperor tetra)