Vari, R.P. & Ortega, H., 2000. Attonitus, a new genus of sexually dimorphic characiforms (Ostariophysi: Characidae) from western Amazonia; a phylogenetic definition and description of three new species. Ichthyol. Explor. Freshwaters 11 (1): 113-140.
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Malabarba, L.R. & Vari, R.P., 2000. Caiapobrycon tucurui, a new genus and species of characid from the rio Tocantins basin, Brazil (Characiformes; Characidae). Ichthyol. Explor. Freshwaters 11 (4), Dec 2000: 315-326.
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