| Diversidade, padrões de distribuição e conservação dos peixes da Caatinga RS Rosa, NA Menezes, HA Britski, W Costa, F Groth Ecologia e conservação da Caatinga 2, 135-180, 2003 | 226 | 2003 |
| Phylogeny and classification of Rivulidae revisited: origin and evolution of annualism and miniaturization in rivulid fishes (Cyprinodontiformes: Aplocheiloidei) W Costa Journal of Comparative Biology 3 (1), 33-92, 1998 | 206 | 1998 |
| The South American annual killifish genus Austrolebias (Teleostei: Cyprinodontiformes: Rivulidae): phylogenetic relationships, descriptive morphology and … WJEM Costa Zootaxa 1213 (1), 1–162-1–162, 2006 | 190* | 2006 |
| Description de huit nouvelles espèces du genre Trichomycterus (Siluriformes: Trichomycteridae), du Brésil oriental WJE COSTA Revue française d'aquariologie (Nancy) 18 (4), 101-110, 1991 | 168 | 1991 |
| Pearl killifishes: the Cynolebiatinae WJ Costa, WJEM Costa TFH Publications, 1996 | 149 | 1996 |
| Feeding habits of a fish community in a tropical coastal stream, Rio Mato Grosso, Brazil WJEM Costa Studies on Neotropical Fauna and Environment 22 (3), 145-153, 1987 | 143 | 1987 |
| The neotropical annual fish genus Cynolebias (Cyprinodontiformes: Rivulidae): phylogenetic relationships, taxonomic revision and biogeography W Costa Ichthyological Exploration of Freshwaters 12 (4), 333-383, 2001 | 119 | 2001 |
| Peixes anuais brasileiros: diversidade e conservação WJEM Costa Editora UFPR, 2002 | 113 | 2002 |
| Un nouveau genre néotropical de la famille des Trichomycteridae (Siluriformes: Loricarioidei) W Costa, FA Bockmann Revue française d'aquariologie (Nancy) 20 (2), 43-46, 1993 | 111 | 1993 |
| Historical biogeography of cynolebiasine annual killifishes inferred from dispersal–vicariance analysis WJEM Costa Journal of Biogeography 37 (10), 1995-2004, 2010 | 106 | 2010 |
| Phylogeny and classification of the Cyprinodontiformes (Euteleostei: Atherinomorpha): a reappraisal W Costa Phylogeny and classification of neotropical fishes, 537-560, 1998 | 102 | 1998 |
| Phylogenetic position and taxonomic status of Anablepsoides, Atlantirivulus, Cynodonichthys, Laimosemion and Melanorivulus (Cyprinodontiformes: Rivulidae) WJEM Costa Ichthyological Exploration of Freshwaters 22 (3), 233, 2011 | 95 | 2011 |
| Catalog of aplocheiloid killifishes of the world WJEM Costa Laboratório de Ictiologia Geral e Aplicada, Departamento de Zoologia …, 2008 | 87 | 2008 |
| Descriptive morphology and phylogenetic relationships among species of the Neotropical annual killifish genera Nematolebias and Simpsonichthys (Cyprinodontiformes … WJEM Costa Neotropical Ichthyology 4, 1-26, 2006 | 84 | 2006 |
| Análise filogenética da família Rivulidae (Cyprinodontiformes, Aplocheiloidei) WJEM Costa Revista Brasileira de Biologia 50 (1), 65-82, 1989 | 77 | 1989 |
| Family Rivulidae (south American annual fishes) W Costa Check list of the freshwater fishes of South and Central America, Edipucrs …, 2003 | 71 | 2003 |
| Relationships and redescription of Fundulus brasiliensis (Cyprinodontiformes: Rivulidae), with description of a new genus and notes on the classification of the Aplocheiloidei W Costa Ichthyological Exploration of Freshwaters 15 (2), 105-120, 2004 | 66 | 2004 |
| Three new annual fishes of the genus Austrolebias from the laguna dos Patos system, southern Brazil, and a redescription of A. adloffi (Ahl)(Cyprinodontiformes: Rivulidae) W Costa, MM Cheffe Comunicações do Museu de Ciências e Tecnologia da PUCRS, série Zoologia 14 …, 2001 | 60 | 2001 |
| A new genus and species of Sarcoglanidinae (Siluriformes: Trichomycteridae) from southeastern Brazil, with a re-examination of subfamilial phylogeny W Costa, FA Bockmann Journal of Natural History 28 (3), 715-730, 1994 | 59 | 1994 |
| Poema A Costa Casa da gramática:: revista de creación literaria e cultura, 1, 1998 | 57 | 1998 |
