| Annotated checklist of the freshwater fishes of Peru H Ortega, RP Vari Smithsonian Contributions to Zoology, 1986 | 176 | 1986 |
| Fragmentation of Andes-to-Amazon connectivity by hydropower dams EP Anderson, CN Jenkins, S Heilpern, JA Maldonado-Ocampo, ... Science Advances 4 (1), eaao1642, 2018 | 142 | 2018 |
| Lista anotada de los peces de aguas continentales del Perú: Estado actual del conocimiento, distribución, usos y aspectos de conservación H Ortega, M Hidalgo, E Correa MINAM, 2010 | 86 | 2010 |
| The Tambopata-Candamo reserved zone of southeastern Perú: a biological assessment RB Foster, TA Parker III, AH Gentry, LH Emmons, A Chicchon, ... Washington, DC: Conservation International 184, 1994 | 82 | 1994 |
| Qualidade de ovos de consumo submetidos a diferentes condições de armazenamento IMC Xavier, SV Cançado, TC Figueiredo, LJC Lara, AMQ Lana, ... Arquivo Brasileiro de Medicina Veterinária e Zootecnia 60 (4), 953-959, 2008 | 59 | 2008 |
| Effects of the freshwater aquarium trade on wild fish populations in differentially‐fished areas of the Peruvian Amazon CL Gerstner, H Ortega, H Sanchez, DL Graham Journal of Fish Biology 68 (3), 862-875, 2006 | 54 | 2006 |
| Additions and corrections to the list of freshwater fishes of Peru F Chang, H Ortega Publicaciones del Museo Historia Natural. UNMSM, 1-11, 1995 | 46 | 1995 |
| Freshwater fishes and aquatic habitats in Peru: Current knowledge and conservation H Ortega, M Hidalgo Aquatic Ecosystem Health & Management 11 (3), 257-271, 2008 | 44 | 2008 |
| Fishes of three Bolivian rivers: Diversity, distribution and conservation B Chernoff, AM Allison, P Willink, J Sarmiento, S Barrera, N Menezes, ... Interciencia 25 (6), 273-283, 2000 | 41 | 2000 |
| Electrical signalling of dominance in a wild population of electric fish V Fugère, H Ortega, R Krahe Biology letters 7 (2), 197-200, 2011 | 39 | 2011 |
| Listado de los peces de la cuenca del río Putumayo en su sector colombo-peruano H Ortega, JI Mojica, JC Alonso, M Hidalgo Biota colombiana 7 (1), 95-111, 2006 | 38 | 2006 |
| Amazon headwaters: Rivers, wildlife, and conservation in southeastern Peru M Goulding, C Cañas, R Barthem, B Forsberg, H Ortega Lima: Amazon Conservation Association, 2003 | 37 | 2003 |
| Biodiversity in aquatic systems of the tropical Andes M Maldonado, JA Maldonado-Ocampo, H Ortega, AC Encalada, ... Climate change and biodiversity in the tropical Andes, 276-294, 2011 | 36 | 2011 |
| Aquatic biodiversity in the Amazon: habitat specialization and geographic isolation promote species richness JS Albert, TP Carvalho, P Petry, MA Holder, EL Maxime, J Espino, ... Animals 1 (2), 205-241, 2011 | 35 | 2011 |
| The introduction of nonnative fishes into freshwater systems of Peru H Ortega, H Guerra, R Ramírez Ecological and genetic implications of aquaculture activities, 247-278, 2007 | 35 | 2007 |
| Biogeografía de los peces de aguas continentales del Perú, con especial referencia a especies registradas a altitudes superiores a los 1000 m H Ortega Memorias del Museo de Historia Natural, UNMSM 21, 39-45, 1992 | 35 | 1992 |
| Unexpected fish diversity gradients in the Amazon basin T Oberdorff, MS Dias, C Jézéquel, JS Albert, CC Arantes, R Bigorne, ... Science advances 5 (9), eaav8681, 2019 | 32 | 2019 |
| Lateral migration of fish between an oxbow lake and an Amazonian headwater river D Osorio, J Terborgh, A Alvarez, H Ortega, R Quispe, V Chipollini, ... Ecology of Freshwater Fish 20 (4), 619-627, 2011 | 31 | 2011 |
| Biota acuática en la Amazonía Peruana: diversidad y usos como indicadores ambientales en el Bajo Urubamba (Cusco-Ucayali) H Ortega, L Chocano, C Palma, I Samanez Revista peruana de biología 17 (1), 29-36, 2010 | 28 | 2010 |
| Trichogenes longipinnis, novo gênero e espécie de Trichomycterinae do sudeste do Brasil (Pisces, Siluriformes) HA Britski, H Ortega Revista Brasileira de Zoologia 1 (3), 211-216, 1982 | 28 | 1982 |
