-57.41889, -11.530833: 7 Treatments

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Acestrocephalus nigrifasciatus   new species  Menezes, Naércio A., 2006, Description of five new species of Acestrocephalus Eigenmann and redescription of A. sardina and A. boehlkei (Characiformes: Characidae), Neotropical Ichthyology 4 (4), pp. 385-400: 395-397 395-397
Caenotropus schizodon   new species  Alexandre Scharcansky & Carlos Alberto Santos de Lucena, 2007, Caenotropus schizodon, a new chilodontid fish from the Rio Tapajos drainage, Brazil (Ostariophysi: Characiformes: Chilodontidae)., Zootaxa 1557, pp. 59-66: 60-63 60-63
Brycon falcatus     Lima, Flávio C. T., 2017, A revision of the cis-andean species of the genus Brycon Müller & Troschel (Characiformes: Characidae), Zootaxa 4222 (1), pp. 1-189: 142-158 142-158
Moenkhausia mutum   new species  Dagosta, Fernando C. P. & Marinho, Manoela M. F., 2016, A new species of Moenkhausia Eigenmann (Characiformes: Characidae) from the rio Arinos basin, Brazil, Neotropical Ichthyology 14 (2), No. e 150052, pp. 1-7: 2-6 2-6
Corydoras apiaka   new species  Espíndola, Vinicius C., Spencer, Marcelo R. S., Rocha, Leandro R. & Britto, Marcelo R., 2014, A new species of Corydoras Lacépède (Siluriformes: Callichthyidae) from the Rio Tapajós basin and its phylogenetic implications, Papéis Avulsos de Zoologia (São Paulo) 54 (3), pp. 25-32: 26-31 26-31
Scybalocanthon uniplagiatus   new combination  Silva, Fernando A. B. & Valois, Marcely, 2019, A taxonomic revision of the genus Scybalocanthon Martínez, 1948 (Coleoptera Scarabaeidae: Scarabaeinae: Deltochilini), Zootaxa 4629 (3), pp. 301-341: 337-338 337-338
Lachnomyrmex amazonicus   new species  Feitosa, R. M. & Brandão, C. R. F., 2008, A taxonomic revision of the Neotropical myrmicine ant genus Lachnomyrmex Wheeler (Hymenoptera: Formicidae), Zootaxa 1890, pp. 1-49: 11-13 11-13