Author: Arbour & López-Fernández, 2011
Comments: This species is usually found associated with clear water streams with moderate current; also in seasonally flooded lagoons with no current in the Rupununi savannas.  The substrate is usually sandy with nearby large rocks; large numbers of juveniles were observed in river sections formed by mixtures of pebbles and small rocks over sandy bottom, frequently with some leaf litter.  Water parameters where it was collected showed a temperature range of 24.8-28.5ºC, with relatively high dissolved oxygen levels (5.3-6.56 mg/L) and very low conductivity (27.1-34.5µS) at localities in the Rupununi and Pirara (Ireng) drainages (Ref. 86674).