Melanorivulus scalaris, UFRJ 6494, male, 29.7 mm SL. Photograph by W.J.E.M. Costa.

 
 
  Part of: Costa WJEM (2018) Three new species of the killifish genus Melanorivulus from the Rio ParanĂ¡ Basin, central Brazilian Cerrado (Cyprinodontiformes, Aplocheilidae). Zoosystematics and Evolution 94(1): 17-27. https://doi.org/10.3897/zse.94.21321