Author: Bragança, 2018
Comments: In the Igarapé Mauaú, this species was collected in a shallow area, about 30-70 cm deep, in a slow flowing high transparency black-water stream, with sandy beaches and leaf litter areas on the bottom near stream margin. It was found forming shoals of about 15-20 individuals that were swimming near the surface.  This species was found sympatrically with the <i>Hyporhamphus brederi</i> (Ref. 123788).