- Descrito por / Described by: F. R. de Carvalho, Vinicius A. Bertaco & F. C. Jerep, 2010
- Nome original / Original name: Hemigrammus tocantinsi
- Nome do artigo / Article name: Hemigrammus tocantinsi: a new species from the upper rio Tocantins basin, central Brazil (Characiformes: Characidae).
- Publicado em / Published in: Neotropical Ichthyology v. 8 (no. 2): 247-254.
- Localidade tipo / Type locality: Rio das Pedras, Fazenda Córrego Fundo, 13°44'34"S, 47°26'33"W, Cavalcante, Goiás, Brasil. / Rio das Pedras, Fazenda Córrego Fundo, 13°44'34"S, 47°26'33"W, Cavalcante, Goiás, Brazil.
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