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By: Silveira, Luiz G. G. - Langeani Neto, Francisco - Graça, Weferson Júnio da, - Pavanelli, Carla S. - Buckup, Paulo AndreasType: ArticleIn: Neotropical IchthyologyVolume:Series:Issue:Date: 2008-01-01Page Range:Publication Info:Subjects: Characidiinae Sexual fin-hooks South American darters taxonomy upper rio Paraná Upper rio Tocantins