Author: (Eigenmann & Allen, 1942)
Comments: This is typically associated with blackwater environment, mainly in rivers.  In central Amazon, it occurs both in black and clear waters but only in dense vegetation where there is minimal light.  Field data suggest that this fish inhabits water with low pH, low conductivity and low level of dissolved oxygen.  Reaches sexual maturity above 2.8 cm SL (Ref. 79512).