Melanorivulus is a genus of rivulines native to South America. It was first elevated to genus status in 2011 by W. J. E. M. Costa. However, subsequent work in 2012 by J. H. Huber suggests that this grouping is merely a subgenus of Rivulus.
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