Type locality, Potaro-Siparuni (Region 8), Water Dog Falls, Burro Burro River, Essequibo Drainage, UG/CSBD 1666, (ex. ANSP 177130) (holotype of Guianacara dacrya, 7.92 cm SL). Known from south-western and central Guyana, as far north as the Potaro River and as far south as the Yukanopita Falls in the Essequibo River. It is abundant in the Essequibo basin, including the drainages of its main tributaries the Rupununi, Siparuni and Kuyuwini, as well as the Takutu and Ireng drainages in the Branco River basin (Ref. 86674).