-48.383335, -12.25: 10 Treatments

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Tetragonopterus akamai   sp. nov.  Araujo, Leonardo B. S. & Lucinda, Paulo H. F., 2014, A new species of the genus Tetragonopterus Cuvier, 1816 (Ostariophysi: Characiformes: Characidae) from the rio Tocantins drainage, Brazil, Neotropical Ichthyology 12 (2), pp. 309-315 : 310-314 310-314
Jupiaba elassonaktis   new species  Thiago N. A. Pereira & Paulo H. F. Lucinda, 2007, A new species of Jupiaba Zanata, 1997 (Ostariophysi, Characiformes, Characidae) from the rio Tocantins drainage, Brazil., Zootaxa 1614, pp. 53-60 : 54-57 54-57
Thaumasia onca   sp. nov.  Cruz Da Silva, Estevam L. & Carico, James E., 2012, 3567, Zootaxa 3567, pp. 1-64 : 20-22 20-22
Astyanax elachylepis   sp. nov.  Bertaco, Vinicius A. & Lucinda, Paulo H. F., 2005, Astyanax elachylepis, a new characid fish from the rio Tocantins drainage, Brazil (Teleostei: Characidae), Neotropical Ichthyology 3 (3), pp. 389-394 : 390-392 390-392
Pimelodus stewarti   sp. nov.  Ribeiro, Frank R. V., Lucena, Carlos A. S. & Lucinda, Paulo H. F., 2008, Three new Pimelodus species (Siluriformes: Pimelodidae) from the rio Tocantins drainage, Brazil, Neotropical Ichthyology 6 (3), pp. 455-464 : 456-458 456-458
Pimelodus halisodous   sp. nov.  Ribeiro, Frank R. V., Lucena, Carlos A. S. & Lucinda, Paulo H. F., 2008, Three new Pimelodus species (Siluriformes: Pimelodidae) from the rio Tocantins drainage, Brazil, Neotropical Ichthyology 6 (3), pp. 455-464 : 458-460 458-460
Charax niger     Menezes, Naércio A. & de Lucena, Carlos Alberto S., 2014, A taxonomic review of the species of Charax Scopoli, 1777 (Teleostei: Characidae: Characinae) with description of a new species from the rio Negro bearing superficial neuromasts on body scales, Amazon basin, Brazil, Neotropical Ichthyology 12 (2), pp. 193-228 : 215-217 215-217
Pimelodus joannis   sp. nov.  Ribeiro, Frank R. V., Lucena, Carlos A. S. & Lucinda, Paulo H. F., 2008, Three new Pimelodus species (Siluriformes: Pimelodidae) from the rio Tocantins drainage, Brazil, Neotropical Ichthyology 6 (3), pp. 455-464 : 460-462 460-462
Potamotrygon garmani   sp. nov.  João Pedro Fontenelle & Marcelo R. De Carvalho, 2017, Systematic revision of the Potamotrygon scobina Garman, 1913 species-complex (Chondrichthyes: Myliobatiformes: Potamotrygonidae), with the description of three new freshwater stingray species from Brazil and comments on their distribution and biogeography, Zootaxa 4310 (1), pp. 1-63 : 43-54 43-54
Rineloricaria quilombola   sp. nov.  Chamon, Carine C. & Fichberg, Ilana, 2022, Rineloricaria quilombola: a new species of whiptail catfish (Siluriformes, Loricariidae, Loricariinae) from upper and middle Tocantins River basin, Brazil, Zootaxa 5194 (1), pp. 58-70 : 59-66 59-66