Bertaco, Carvalho & Jerep 2010. Astyanax goyanensis (Miranda-Ribeiro, 1944), new combination and Astyanax courensis, new species (Ostariophysi: Characiformes): two Characidae from the upper rio Tocantins basin, Central Brazil. Neotropical Ichthyology, 8(2), April-June 2010: 265-275