Marinho & Langeani, 2010
A new species of Moenkhausia from the rio Amazonas and rio Orinoco basins (Characiformes: Characidae).Abstract
A new species of Moenkhausia is described from the rio Amazonas and rio Orinoco basins. The new species can be distinguished from congeners mainly by the combination of a conspicuous, relatively small and circular humeral spot, a black spot on the upper caudal-fin lobe, lower caudal-fin lobe without spot or a faint one, and middle caudal-fin rays hyaline or with dark tips. Mature males have a unique combination of two large-sized bony hooks on the anal-fin rays and tiny spines on the distal portion of all fins, which distinguishes the new species from any other species of Characidae.
M.M.F. Marinho & F. Langeani
Zootaxa, 2577: 57–68, 2010.