Simpsonichthys harmonicus
Simpsonichthys harmonicus Costa, 2010 Costa, W.J.E.M. (2010): Simpsonichthys harmonicus, a new seasonal killifish from the São Francisco River basin, northeastern Brazil (Cyprinodontiformes: Rivulidae). Ichthyological Exploration of Freshwaters, 21 (1): 73-78.