South America: Pacific Coast drainages of western Ecuador and northwestern Peru, including (from north to south) the Esmeraldas, Guayas, Santa Rosa, and Tumbes river drainages
Definition: length of a fish measured from the tip of the snout to the posterior end of the last vertebra or to the posterior end of the midlateral portion of the hypural plate. Simply put, this measurement excludes the length of the caudal fin
Known occurrences, collected specimens and observations of Chaetostoma bifurcum Lujan, Meza-Vargas, Astudillo-Clavijo, Barriga-Salazar & López-Fernández 2015. View this species on GBIF