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 taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2023-06-13; License: CC BY 4.0