A new species of Astyanax (Teleostei, Characiformes, Characidae), with breeding tubercles, from the Paraná and Uruguay river basins. Author Lucila C. Protogino Author Amalia M. Miquelarena Author Hugo L. López text Zootaxa 2006 1297 1 16 http://www.zoobank.org/urn:lsid:zoobank.org:pub:8B4411D9-087E-4182-81EF-23D764E0FE27 journal article z01297p001 8B4411D9-087E-4182-81EF-23D764E0FE27 [[ Animalia Characiformes Characidae Astyanax genus Astyanax Baird & Girard ]] The genus Animalia Characiformes Characidae Astyanax genus Astyanax Baird & Girard comprises approximately one-hundred valid species, occurring from southern United States of America to northern Patagonia in Argentina (Miquelarena & Menni, 2005). It is probable, however, that this genus, like several other genera included within the Characidae (e.g. Animalia Characiformes Characidae Hyphessobrycon genus Hyphessobrycon , Animalia Characiformes Characidae Moenkhausia genus Moenkhausia , Animalia Characiformes Characidae Bryconamericus genus Bryconamericus , Animalia Characiformes Characidae Hemigrammus genus Hemigrammus ), is not monophyletic (Weitzman & Fink, 1983; Zanata, 1997; Weitzman & Malabarba, 1998; Lima et al., 2003; Castro & Vari, 2004).