Author: Eigenmann, 1912
Comments: Occurs in little creeks of the estuarine part of rivers where it replaces <i>P. cristata</i> and <i>P. geryi</i> which live more upstream. The notable number of individuals caught during inventory is indicative of its gregarious behavior.  In March and April, all females larger than 5.8 cm are mature.  Like all <i>Pimelodella</i> living in Guiana, the pectoral and dorsal spines are located with a poisonous mucus that can cause painful injuries (Ref. 35381).