| One thousand DNA barcodes of piranhas and pacus reveal geographic structure and unrecognised diversity in the Amazon VN Machado, RA Collins, RP Ota, MC Andrade, IP Farias, T Hrbek Scientific reports 8 (1), 8387, 2018 | 78 | 2018 |
| Effects of local and regional factors on the fish assemblage structure in Meridional Amazonian streams IM Fernandes, LS Lourenço, RP Ota, MMM Moreira, CH Zawadzki Environmental Biology of Fishes 96, 837-848, 2013 | 37 | 2013 |
| A new species of Piaractus (Characiformes: Serrasalmidae) from the Orinoco Basin with a redescription of Piaractus brachypomus MD Escobar L, RP Ota, A Machado‐Allison, J Andrade‐López, IP Farias, ... Journal of Fish Biology 95 (2), 411-427, 2019 | 31 | 2019 |
| Phylogenomics of the Neotropical fish family Serrasalmidae with a novel intrafamilial classification (Teleostei: Characiformes) NTB Mateussi, BF Melo, RP Ota, FF Roxo, LE Ochoa, F Foresti, C Oliveira Molecular phylogenetics and evolution 153, 106945, 2020 | 29 | 2020 |
| A new species of Hemigrammus Gill, 1858 (Characiformes: Characidae) from the rio Madeira and rio Paraguai basins, with a redescription of H. lunatus RP Ota, FCT Lima, CS Pavanelli Neotropical Ichthyology 12, 265-279, 2014 | 29 | 2014 |
| Integrative taxonomy reveals a new species of pacu (Characiformes: Serrasalmidae: Myloplus) from the Brazilian Amazon RP Ota, VN Machado, MC Andrade, RA Collins, IP Farias, T Hrbek Neotropical Ichthyology 18 (01), e190112, 2020 | 22 | 2020 |
| Fishes from first order streams of lower Paranapanema and Ivaí rivers, upper Paraná River basin, Paraná, Brazil V de Mello Cionek, PA Sacramento, N Zanatta, RP Ota, ... Check List 8 (6), 1158-1162, 2012 | 21 | 2012 |
| Revisão taxonômica e filogenia morfológica de Metynnis Cope, 1878 (Characiformes: Serrasalmidae) RP Ota | 20 | 2015 |
| A new Silver Dollar species of Metynnis Cope, 1878 (Characiformes: Serrasalmidae) from Northwestern Brazil and Southern Venezuela RP Ota, LHR Py-Daniel, M Jégu Neotropical Ichthyology 14, e160023, 2016 | 19 | 2016 |
| Redescription and Geographical Distribution of the Endangered Fish Ossubtus xinguense Jégu 1992 (Characiformes, Serrasalmidae) with Comments on … MC Andrade, LM Sousa, RP Ota, M Jégu, T Giarrizzo PLoS One 11 (9), e0161398, 2016 | 17 | 2016 |
| Serrasalmidae RP Ota, CP Röpke, JAS Zuanon, M Jégue Peixes do Rio Madeira-Y-Cuyari Pirá-Ketá, pgs. 14-47, 2013 | 17 | 2013 |
| Checklist of the species of the Order Characiformes (Teleostei: Ostariophysi) M Toledo-Piza, EG Baena, FCP Dagosta, NA Menezes, M Ândrade, ... Neotropical Ichthyology 22 (1), 2024 | 14 | 2024 |
| New species of Metynnis Cope, 1878 (Characiformes: Characidae) from the rio Paraguay basin, Mato Grosso State, Brazil CS Pavanelli, RP Ota, P Petry Neotropical Ichthyology 7, 141-146, 2009 | 14 | 2009 |
| A new species of Hemigrammus Gill, 1858 (Characiformes: Characidae) from the central and western Amazon and rio Paraná-Paraguai basins RP Ota, FCT Lima, CS Pavanelli Zootaxa 3948 (2), 218-232, 2015 | 12 | 2015 |
| Bryconops rheorubrum (Characiformes: Iguanodectidae), new species from the Rio Xingu rapids, Brazil C Silva-Oliveira, MH Sabaj, RP Ota, LHR Py-Daniel Proceedings of the Academy of Natural Sciences of Philadelphia 166 (1), 1-21, 2019 | 11 | 2019 |
| A new large Myloplus Gill 1896 from rio Negro basin, Brazilian Amazon (Characiformes: Serrasalmidae) MC Andrade, RP Ota, DA Bastos, M Jégu Zootaxa 4205 (6), 571-580, 2016 | 11 | 2016 |
| A new species of Hemigrammus Gill 1858 (Characiformes: Characidae) from the western Amazon basin in Peru and Colombia FCT Lima, V Correa, RP Ota Aqua, International Journal of Ichthyology 22 (3), 123-132, 2016 | 11 | 2016 |
| Cytogenetic Characterization of Two Metynnis Species (Characiformes, Serrasalmidae) Reveals B Chromosomes Restricted to the Females RM Favarato, L Braga Ribeiro, RP Ota, CM Nakayama, E Feldberg Cytogenetic and Genome Research 158 (1), 38-45, 2019 | 10 | 2019 |
| Redescription of Moenkhausia melogramma (Characiformes: Characidae), a poorly known tetra from the western Amazon basin IM Soares, RP Ota, FCT Lima, RC Benine Neotropical Ichthyology 18 (3), e200025, 2020 | 9 | 2020 |
| Ichthyofauna from floodplain lakes of Reserva de Desenvolvimento Sustentável Piagaçu-Purus (RDS-PP), lower rio Purus BF Morales, RP Ota, VDP Silva, CP Deus Biota Neotropica 19 (4), e20190779, 2019 | 9 | 2019 |