Petulanos is a genus of headstander from South America. There are currently three described species; one each in the Xingu, Nickerie and Essequibo river basins.
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