Author: (Günther, 1868)
Remark: Böhlke (1970) briefly discussed taxonomy and relationships. Specimens  from Venezuela identified as <i>Opsodoras linnelli</i> (Eigenmann) by Fernández-Yépez (1968:49-50) appear to be closer to <i>L. acipenserinus</i>. Specimens from Rio Orinoco and Rio Negro basins are tentatively identified as <i>Leptodoras acipenserinus</i> and may warrant recognition as one or more distinct species upon thorough revision.
Comments: Inhabits mainly whitewaters, but also occurs moderately in blackwater rivers (Ref. 56896).