Known only from a single cave system beneath Presa Miguel Alemán reservoir, northern State of Oaxaca, located along the east side of the Sierra Mazateca front range. The region of the type locality has undergone extensive hydrological modifications and the biologically rich State State of Oaxaca has been experiencing extensive land-use changes over the last few decades. With the current and project land-use situations, it may may be prudent for the Mexican government to consider protective status for Caecieleotris morrisi under the Norma Oficial Mexicana (NOM; SEMARNAT, 2010), pending further exploration and assessement of the population status, distribution, and ecology of this unique species (Ref.109339).