Abstract
We herein analyse the history of the description of the freshwater fish fauna from three drainages in one of the most densely collected areas of Brazil, and possibly of South America, the Rio Grande do Sul State, southern Brazil. An updated inventory of the freshwater fish species from rio Uruguay (partial) in Brazil, Laguna dos Patos (complete) and rio Tramandaí basins (complete) is presented. We found the number of new species described in these drainages increased nearly 56% since 1981, reaching a total of 422 species, but even now 10% of this number still corresponds to undescribed species. This rate of species description suggests that previous estimates of the Neotropical fish fauna are low, and we predict a final number of Neotropical fishes larger than the largest prediction estimate (8,000 species), after other regions of South and Central Americas become densely sampled. We discuss and attempt to demonstrate that species diversity knowledge is historically and strictly related to collecting efforts. We also demonstrate that the ecoregions in eastern South America with the highest density of species per area correspond to the areas more densely sampled in collections, and this may represent a bias in such kinds of analyses. This uneven sampling in Brazilian regions is apparently associated with the uneven distribution of Zoological research centers in different regions of the country. Small-sized species represents an important source of new species, along with little explored regions or little explored habitats, sometimes associated with restricted range species, and species complexes that need revisionary work. In contrast to other Neotropical regions, Atheriniformes are relatively diverse, sharing the fifth place in species richness with Gymnotiformes, and there is a remarkably high number of species of Rivulidae. Eight species are endemic to the rio Tramandaí drainage, 68 to the Laguna dos Patos system, and 78 to the rio Uruguay drainage. Almost 10% of the freshwater fish species are “Critically Endangered”, “Endangered” or “Vulnerable” according to the IUCN criteria, with Rivulidae as the family with the largest number of threatened species.
References
Abell, R., Thieme, M.L., Revenga, C., Bryer, M., Kottelat, M., Bogutskaya, N., Coad, B., Mandrak, N., Balderas, S.L., Bussing, W., Stiassny, M.L.J., Skelton, P., Allen, G.R., Unmack, P., Naseka, A., Ng, R., Sindorf, N., Robertson, J., Armijo, E., Higgins, J.Y., Heibel, T.J., Wikramanayake, E., Olson, D., López, H.L, Reis, R.E., Lundberg, J.G., Pérez, M.H.S. & Petry, R. (2008) Freshwater ecoregions of the world: a new map of biogeographic units for freshwater biodiversity conservation. Bioscience, 58 (5), 403–414.
http://dx.doi.org/10.1641/B580507Agassiz, L. (1868) A Journey in Brazil. Boston, Tichnor & Fields, London, Trübucr, 540 pp.
Agostinho, A.A., Gomes, L.C. & Felicice, F.M. (2008) Dams and fish fauna of the Neotropical region: impacts and management related to diversity and fisheries. Brazilian Journal of Biology, 68 (4), 1119–1132.
http://dx.doi.org/10.1590/S1519-69842008000500019Albert, J. & Reis, R.E. (2011) Introduction to Neotropical Freshwaters. In: Albert, J. & Reis, R.E. (Eds), Historical Biogeography on Neotropical Freshwaters Fishes. University of California Press, Berkeley and Los Angeles, California, pp. 3–19.
http://dx.doi.org/10.1525/california/9780520268685.003.0001Andrade, B.N. & Langeani, F. (2014) A new speces of Neoplecostomus Eigenmann & Eigenmann, 1888 (Siluriformes: Loricariidae: Neoplecostominae) from the upper rio Paraná basin. Neotropical Ichthyology, 12 (4), 675–681.
http://dx.doi.org/10.1590/1982-0224-20130195Anonymous. (1931) Ensaio biographico sobre o Prof. Dr. Hermann von Ihering, Director do Museu Paulista (1893–1916). Revista do Museu Paulista, 17, 553–566.
Artioli, L.G.S., Neto, P.C., Maia, R. & Fialho, C.B. (2013) First record of the non-native species Acestrorhynchus pantaneiro Menezes 1992 (Characiformes, Acestrorhynchidae) in the Tramandaí River system, Rio Grande do Sul, Brazil. Panamjas, 8 (1), 51–54.
Becker, F.G., de Fries, L.C.C., Ferrer, J., Bertaco, V.A., Luz-Agostinho, K.D.G., Silva, J.F.P., Cardoso, A.R., Lucena, Z.M.S. & Lucena, C.A.S. (2013) Fishes of the Taquari-Antas river basin (Patos Lagoon basin), southern Brazil. Brazilian Journal of Biology, 73, 79–90.
http://dx.doi.org/10.1590/S1519-69842013000100010Bertaco, V.A. & Azevedo, M.A. (2013) A coleção de peixes do Museu de Ciências Naturais, Fundação Zoobotânica/RS. Boletim Sociedade Brasileira de Ictiologia, 106, 15–16.
Bertaco, V.A. & Lucena, C.A.S. (2010) Redescription of Astyanax obscurus (Hensel, 1870) and A. laticeps (Cope, 1894) (Teleostei: Characidae): two valid freshwater species originally described from rivers of southern Brazil. Neotropical Ichthyology, 8 (1), 7–20.
Bertaco, V.A. & Malabarba, L.R. (2001) Description of two new species of Astyanax (Teleostei: Characidae) from headwater streams of Southern Brazil, with comments on the “A. scabripinnis species complex”. Ichthyological Exploration of Freshwaters, 12 (3), 221–234.
Bertaco, V.A. & Vigo, A.C. (2015) A new species of Astyanax Baird & Girard (Ostariophysi: Characidae) from the rio Taquari-Antas basin, southern Brazil. Neotropical Ichthyology, 13 (2), 265–272.
http://dx.doi.org/10.1590/1982-0224-20140145Betancur, R.R., Broughton, R.E., Wiley, E.O., Carpenter, K., López, J.A., Li, C., Holcroft, N.I., Arcila, D., Sanciangco, M., Cureton, J.C., Zhang, F., Buser, T., Campbell, M.A., Ballesteros, J.A., Roa-Varon, A., Willis, S., Borden, W.C., Rowley, T., Reneau, P.C., Hough, D.J., Lu, G., Grande, T., Arratia, G. & Ortí, G. (2013) The Tree of Life and a New Classification of Bony Fishes. PLOS Currents Tree of Life.
http://dx.doi.org/10.1371/currents.tol.53ba26640df0ccaee75bb165c8c26288Böhlke, J.E., Weitzman, S.H. & Menezes, N.A. (1978) Estado atual da sistemática de peixes de água doce da América do Sul. Acta Amazônica, 8 (4), 657–677.
Braun, A.S., Milani, P.C.C. & Fontoura, N.F. (2003) Registro da introdução de Clarias gariepinus (Siluriformes, Clariidae) na laguna dos Patos, Rio Grande do Sul, Brasil. Biociências, Porto Alegre, 11 (1), 101–102.
Buckup, P.A., Menezes, N.A. & Ghazzi, M.S. (2007) Catálogo das espécies de peixes de água doce do Brasil. Museu Nacional, Rio de Janeiro, 195 pp.
Calegari, B.B., Reis, R.E. & Vari, R.P. (2013) Miniature catfishes of the genus Gelanoglanis (Siluriformes: Auchenipteridae): monophyly and the description of a new species from the upper rio Tapajós basin, Brazil. Neotropical Ichthyology, 12 (4), 699–706.
http://dx.doi.org/10.1590/1982-0224-20130233Carvalho, F.R., Malabarba, L.R., Lenz, A.J., Fukakusa, C.K., Guimarães, T.F.R., Sanabria, J.A. & Moraes, A.C. (2012) Ictiofauna da Estação Experimental Agronômica da Universidade Federal do Rio Grande do Sul, sul do Brasil: composição e diversidade. Revista Brasileira de Biociências, 10 (1), 26–47.
Carvalho, T.P. & Reis, R.E. (2009) Four new species of Hisonotus (Siluriformes: Loricariidae) from the upper rio Uruguay, southeastern South America, with a review of the genus in the rio Uruguay basin. Zootaxa, 2113, 1–40.
Carvalho, T.P. & Reis, R.E. (2011) Taxonomic review of Hisonotus Eigenmann & Eigenmann (Siluriformes: Loricariidae: Hypoptopomatinae) from the laguna dos Patos system, southern Brazil. Neotropical Ichthyology, 9 (1), 1–48.
http://dx.doi.org/10.1590/S0074-02762011000900001Castro, R.M.C. (1999) Evolução da ictiofauna de riachos sul-americanos: padrões gerais e possíveis processos causais. In: Caramaschi, E.P., Mazzoni, R. & Peres-Neto, P.R. (Eds.), Ecologia de Peixes de Riachos. Série Oecologia Brasiliensis, PPGE-UFRJ, RJ, Brasil, pp. 139–155.
http://dx.doi.org/10.4257/oeco.1999.0601.04Cognato, D., Richer-de-Forges, M.M., Albert, J.S. & Crampton, W.G.R. (2008) Gymnotus chimarrao, a new species of electric fish (Gymnotiformes: Gymnotidae) from southern Brazil. Ichthyological Exploration of Freshwaters, 18 (4), 375–382.
Cope, E.W. (1894a) On three new genera of Characinidae. American Naturalist, 48, 67.
Cope, E.W. (1894b) On the fishes obtained by the naturalist expedition in Rio Grande do Sul. Proceedings of the American Philosophical Society, Philadelphia, 33 (144), 84–108.
Cox Fernandes, C., Podos, J. & Lundberg, J.G. (2004) Amazonian ecology: tributaries enhance the diversity of electric fishes. Science, 305 (5692), 1960–1962.
http://dx.doi.org/10.1126/science.1101240Cruz-Spindler, S., Leal, M.E., Lehmann, P.A. & Schulz, U.H. (2012) First record of the exotic channel catfish Ictalurus punctatus (Rafinesque 1818) (Siluriformes: Ictaluridae) in the rio dos Sinos basin, RS, Brazil. Biota Neotropica, 12 (3), 1–3. http://dx.doi.org/10.1590/S1676-06032012000300005
Deprá, G.C., Kullander, S.O., Pavanelli, C.S. & Graça, W. J. da. (2014) A new colorful species of Geophagus (Teleostei: Cichlidae), endemic to the rio Aripuanã in the Amazon basin of Brazil. Neotropical Ichthyology, 12 (4), 737–746.
http://dx.doi.org/10.1590/1982-0224-20140038Di Persia, D.H. & Neiff, J.J. (1986) The Uruguay River system. In: Davies, B.R. & Walker, K.F. (Eds.), The ecology of river systems. Dr. W. Junk Publishers, Dordrecht, pp. 599–621.
http://dx.doi.org/10.1007/978-94-017-3290-1_12DoNascimiento, C., Prada-Pedreros, S. & Guerrero-Kommritz, J. (2014) A new catfish species of the genus Trichomycterus (Siluriformes: Trichomycteridae) from the río Orinoco versant of Páramo de Cruz Verde, Eastern Cordillera of Colombia. Neotropical Ichthyology, 12 (4),717–728.
http://dx.doi.org/10.1590/1982-0224-20140005Dufech, A.P.S. & Fialho, C.B. (2007) Biologia populacional de Pachyurus bonariensis Steindachner, 1879 (Perciformes, Sciaenidae), uma espécie alóctone no sistema da laguna dos Patos, Brasil. Biota Neotropica, 7 (1), 91–96.
http://dx.doi.org/10.1590/S1676-06032007000100015Eigenmann, C.H. (1911) The localities at which Mr. John D. Haseman made collections. Annals of the Carnegie Museum, Pittsburg, 7, 299–314.
Eigenmann, C.H. (1915) The Cheirodontinae, a subfamily of minute characid fishes of South America. Annals of the Carnegie Museum, Pittsburg, 7, 1–100.
Eigenmann, C.H. (1917) The American Characidae; 1. Memoirs of Museum of comparative Zoology of Harvard College, Cambridge, Mass., 43, 1–102.
Eschmeyer, W.N. & Fricke, R. (2016) Catalog of Fishes. California Academy of Sciences. Available from: http://researcharchive.calacademy.org/research/ichthyology/catalog/fishcatmain.asp (accessed 12 January 2016)
Ferrer, J. & Malabarba, L.R. (2011) A new Trichomycterus lacking pelvic fins and pelvic girdle with a very restricted range in southern Brazil (Siluriformes: Trichomycteridae). Zootaxa, 2912, 59–67.
Ferrer, J. & Malabarba, L.R. (2013) Taxonomic review of the genus Trichomycterus Valenciennes (Siluriformes: Trichomycteridae) from the Laguna dos Patos system, southern Brazil. Neotropical Ichthyology, 11 (2), 217–246.
http://dx.doi.org/10.1590/S1679-62252013000200001Fowler, H.W. (1906a) Further konwledge of some heterognathous; part. 1. Proceedings of the Academy of Natural Sciences of Philadelphia, Philadelphia, 58, 293–351.
Fowler, H.W. (1906b) Further knowledge of some heterognathous part 2. Proceedings of the Academy of Natural Sciences of Philadelphia, Philadelphia, 58, 431–483.
Fowler, H.W. (1915a) Notes on Nematognathous fishes. Proceedings of the Academy of Natural Sciences of Philadelphia, Philadelphia, 67, 203–243.
Fowler, H.W. (1915b) Notes on some gymnotid fishes. Copeia, 20 (15), 1–2.
http://dx.doi.org/10.2307/1437357Garcia, A.M., Loebmann, D., Vieira, J.P. & Bemvenuti, M.A. (2004) First records of introduced carps (Teleostei, Cyprinidae) in the natural habitats of Mirim and Patos Lagoon estuary, Rio Grande do Sul, Brazil. Revista Brasileira de Zoologia, 21 (1), 157–159.
http://dx.doi.org/10.1590/S0101-81752004000100027Ghazzi, M.S. (2008) Nove espéces do gênero Rineloricaria (Siluriformes, Loricariidae) do rio Uruguai, do sul do Brasil. Iheringia, Série Zoologia, 98 (1), 100–122.
http://dx.doi.org/10.1590/S0073-47212008000100014Gomes, A.L. (1947) A small collection of fishes from Rio Grande do Sul, Brazil. Miscellaneous Publications Museum of Zoology, Ann Arbor, 67, 1–39.
Guimarães, T.F.R. (2009) Conectividade e padrões de riqueza e diversidade de espécies de peixes nas lagoas do litoral norte do Rio Grande do Sul, Brasil. Unpublished monograph Universidade Federal do Rio Grande do Sul, Porto Alegre, 37 pp.
Haseman, J.D. (1911) A brief report upon the expedition of the Carnegie Museum to Central South America. Annals of the Carnegie Museum, Pittsburg, 7, 287–299.
Hensel, R.F. (1868) Beitrage zur kenntniss der Wierbelthicre Sudbrasiliens. Archiv fur Naturgeschichte, Berlin, 34, 356–375.
Hensel, R.F. (1870) Beitrage zur kenntniss der Wierbelthiere Sudbrasiliens. Archiv fur Naturgeschichte, Berlin, 36, 50–91.
http://dx.doi.org/10.5962/bhl.part.25780Hirschmann, A., Malabarba, L.R., Thomaz, A.T. & Fagundes, N.J.R. (2015) Riverine habitat specificity constrains dispersion in a Neotropical fish (Characidae) along Southern Brazilian drainages. Zoologica Scripta, 44, 374–382.
http://dx.doi.org/10.1111/zsc.12106Holland, W.J. (1911) The Carnegie Museum Expedition to Central South America, 1907–1910. Annals of the Carnegie Museum, Pittsburg, 7, 283–6.
Ihering, H. von. (1893) Die süsswasser-fische von Rio Grande do Sul. Kozeritz Deutscher Volkskulender für Brasilien, Porto Alegre, Gundlach, 95–128.
Ihering, H. von. (1898) Os peixes de água doce do Rio Grande do Sul. In: Annuario do estado do Rio Grande do Sul. Porto Alegre, pp. 161–190.
Leal, M.E., Bremm, C.Q. & Schulz, U.H. (2009) Lista da ictiocenose da bacia do rio dos Sinos, sul do Brasil. Boletim do Instituto de Pesca, São Paulo, 35 (2), 307–317.
Lehmann A., P., Schvambach, L.J. & Reis, R.E. (2015) A new species of the armored catfish Parotocinclus (Loricariidae: Hypoptopomatinae), from the Amazon basin in Colombia. Neotropical Ichthyology, 13 (1), 47–52.
http://dx.doi.org/10.1590/1982-0224-20140113Lucena, C.A.S. & Kullander, S.O. (1992) The Crenicichla (Teleostei: Cichlidae) species of the Uruguai River drainage in Brazil. Ichthyological Exploration of Freshwaters, 3 (2), 97–160.
Lucena, C.A.S., Castro, J.B. & Bertaco, V.A. (2013) Three new species of Astyanax from drainages of southern Brazil (Characiformes: Characidae). Neotropical Ichthyology, 11 (3), 537–552.
http://dx.doi.org/10.1590/S1679-62252013000300007Lucinda, P.H.F. (2008) Systematics and biogeography of the genus Phalloceros Eigenmann, 1907 (Cyprinodontiformes: Poeciliidae: Poeciliinae), with the description of twenty-one new species. Neotropical Ichthyology, 6 (2), 113–158.
http://dx.doi.org/10.1590/S1679-62252008000200001Machado, R., Dala-Corte, R.B., Carvalho-Neto, P., Silva, E.B. & Ott, P.H. (2015) Ocorrência de peixes não-nativos no sistema estuarino-lagunar de Tramandaí, Rio Grande do Sul, Brasil. Revista Eletrônica Científica da Uergs, Porto Alegre, 1 (1), 36–42.
Malabarba, L.R. & Isaia, E.A. (1992) The fresh water fish fauna of the rio Tramandaí drainage, Rio Grande do Sul, Brazil, with a discussion of its historical origin. Comunicações do Museu de Ciências e Tecnologia da PUCRS, Série Zoologia, 5, 197–223.
Malabarba, L.R. & Kindel, A. (1995) A new species of the genus Bryconamericus Eigenmann, 1907 from southern Brazil (Ostariophysi: Characidae). Proceedings of the Biological Society of Washington, 108 (4), 679–686.
Malabarba, L.R. & Malabarba, M.C.S.L. (2014) Filogenia e classificação dos peixes neotropicais. In: Baldisserotto, B., Cyrino, J.E.P. & Urbinati, E.C. (Eds.), Biologia e fisiologia de peixes neotropicais de água doce. UNESP, Jaboticabal, pp. 1–12.
Malabarba, L.R. & Weitzman, S.H. (2003) Description of a new genus with six new species from southern Brazil, Uruguay and Argentina, with a discussion of a putative characid clade (Teleostei: Characiformes: Characidae). Comunicações do Museu de Ciências e Tecnologia da PUCRS, Série Zoologia, 16 (1), 67–151.
Malabarba, L.R. (1989) Histórico sistemático e lista comentada das espécies de peixes de água doce do sistema da laguna dos Patos, Rio Grande do Sul, Brasil. Comunicações do Museu de Ciências e Tecnologia da PUCRS, Série Zoologia, 2, 107–179.
Malabarba, L.R., Carvalho Neto, P., Bertaco, V.A., Carvalho, T.P., dos Santos, J.F. & Artioli, L.G.S. (2013) Guia de identificação dos peixes da bacia do rio Tramandaí. Porto Alegre, Via Sapiens, 140 pp.
Malabarba, L.R., Fialho, C.B., Anza, J.A., Santos, J.F. & Mendes, G.N. (2009) Peixes. In: Boldrini, I.I. (Org.), Biodiversidade dos Campos do Planalto das Araucárias. Ministério do Meio Ambiente, Brasília, pp. 131–156.
Malabarba, L.R., Malabarba, M.C. & Reis, R.E. (2015) Descriptions of five new species of the Neotropical cichlid genus Gymnogeophagus Miranda Ribeiro, 1918 (Teleostei: Cichliformes) from the rio Uruguay drainage. Neotropical Ichthyology, 13 (4), 637–662.
http://dx.doi.org/10.1590/1982-0224-20140188Martins, F. de O., Langeani, F. & Zawadzki, C.H. (2014) A new spiny species of Hypostomus Lacépède (Loricariidae: Hypostominae) from thermal waters, upper rio Paraná basin, central Brazil. Neotropical Ichthyology, 12 (4), 729–736.
http://dx.doi.org/10.1590/1982-0224-20140035Mello-Leitão, C. (1941) Historia das Expedições Cientificas no Brasil. Rio de Janeiro, Nacional. Coleção Brasiliana, 209, 250–295.
Menezes, N.A. & Ribeiro, A.C. (2010) Oligosarcus jacuiensis (Charciformes: Characidae), a new species from the Uruguay and Jacuí river basins, southern Brazil. Neotropical Ichthyology, 8 (3), 649–653.
http://dx.doi.org/10.1590/S1679-62252010000300010Menezes, N.A. & Ribeiro, A.C. (2015) A new species of the lowland Oligosarcus Günther species group (Teleostei: Ostariophysi: Characidae). Neotropical Ichthyology, 13 (3), 541–546.
http://dx.doi.org/10.1590/1982-0224-20150083Menezes, N.A. & Weitzman, S.H. (2011) A systematic review of Diapoma (Teleostei: Characiformes: Characidae: Stevardiinae: Diapomini) with descriptions of two new species from southern Brazil. Papéis Avulsos de Zoologia, 51 (5), 59–82.
Netto-Ferreira, A.L., Birindelli, J.L.O., Sousa, L.M. de, Mariguela, T.C. & Oliveira, C. (2013) A new miniature characid (Ostariophysi: Characiformes: Characidae), with phylogenetic position inferred from morphological and molecular data. PLoS ONE, 8 (1), 1–7.
http://dx.doi.org/10.1371/journal.pone.0052098Nogueira, C., Buckup, P.A., Menezes, N.A., Oyakawa, O.T., Kasecker, T.P., Neto, M.B.R. & da Silva, J.M.C. (2010) Restricted-range fishes and the conservation of Brazilian freshwaters. PLoS ONE, 5 (6), e11390.
http://dx.doi.org/10.1371/journal.pone.0011390Oliveira, C., Avelino, G.S., Abe, K.T., Mariguela, T.C., Benine, R.C., Ortí, G., Vari, R.P. & Castro, R.M.C. (2011) Phylogenetic relationships within the speciose family Characidae (Teleostei: Ostariophysi: Characiformes) based on multilocus analysis and extensive ingroup sampling. BMC Evolutionary Biology, 11, 275.
http://dx.doi.org/10.1186/1471-2148-11-275Orleans, G. (1936) Viagem militar ao Rio Grande do Sul (agosto a novembro de 1865). São Paulo, Nacional, 290 pp.
Ota, R.R., Message, H.J., da Graça, W.J. & Pavanelli, C.S. (2015) Neotropical Siluriformes as a model for insights on determining biodiversity of animal groups. PloS ONE, 10 (7), 1–13.
http://dx.doi.org/10.1371/journal.pone.0132913Papavero, N. (1973) Essays on the history of neotropical dipterology. With special reference to collectors (1750–1905). Museu de Zoologia, Universidade de São Paulo, São Paulo, 2, 217–446.
Pereira, L.E., Ramos, L.A. & Pontes, S.X. (1998) Lista comentada dos peixes e crustáceos do estuário do Arroio Chuí e região costeira adjacente, RS. Atlântica, Rio Grande, 20, 165–172.
Pinto, O. 1945. Cinquenta anos de investigação ornitológica. Arquivos de Zoologia, São Paulo, 4, 255–340.
Queiroz, L.J., Torrente-Vilara, G., Ohara, W.M., Pires, T.H.S., Zuanon, J. & Doria, C.R.C. (2013) Peixes do Rio Madeira. Vol. 1. Editora Dialeto, São Paulo, 1163 pp.
Ramos, L.A. & Vieira, J.P. (2001) Composição específica e abundância de peixes de zonas rasas dos cinco estuários do Rio Grande do Sul, Brasil. Boletim Instituto da Pesca, São Paulo, 27 (1), 109–121.
Reis, R.E. & Schaefer, S.A. (1998) New cascudinhos from southern Brazil: systematics, endemism, and relationships (Siluriformes, Loricariidae, Hypoptopomatinae). American Museum Novitates, 3254, 1–25.
Reis, R.E., Kullander, S.O. & Ferraris, C.J. (2003a) Check List of the Freswater Fishes of South and Central America. Edipucrs, Porto Alegre, 729 pp.
Reis, R.E., Lucena, Z.M.S., Lucena, C.A.S. & Malabarba, L.R. (2003b) Peixes. In: Fontana, C.S., Bencke, G.A. & Reis, R.E. (Org.), Livro vermelho da fauna ameaçada de extinção no Rio Grande do Sul. Edipucrs, Porto Alegre, pp. 117–145.
Říčan, O. & Kullander, S.O. (2008) The Australoheros (Teleostei: Cichlidae) species of the Uruguay and Paraná River drainages. Zootaxa, 1724, 1–51.
Saccol-Pereira, A., Milani, P.C.C. & Fialho, C.B. (2006) Primeiro registro de Acestrorhynchus pantaneiro Menezes, 1992 (Characiformes, Acestrorhynchidae) no sistema da laguna dos Patos, Rio Grande do Sul, Brasil. Biota Neotropica, 6, 1–4. http://dx.doi.org/10.1590/S1676-06032006000300017
Sarmento-Soares, L.M. & Birindelli, J.L.O. (2015) A new species of the catfish genus Centromochlus (Siluriformes: Auchenipteridae: Centromochlinae) from the upper rio Pananá basin, Brazil. Neotropical Ichthyology, 13 (1), 77–86.
http://dx.doi.org/10.1590/1982-0224-20140042Schaefer, S. A. 1998. Conflict and resolution: impact of new taxa on phylogenetic studies of the Neotropical cascudinhos (Siluroidei: Loricariidae). In: Malabarba, L.R., Reis, R.E., Vari, R.P., Lucena, Z.M.S. & Lucena, C.A.S. (Eds.), Phylogeny and classification of Neotropical fishes. Edipucrs, Porto Alegre, pp. 375–400.
Schulz, U.H. & Leal, M.E. (2005) Growth and mortality of black bass, Micropterus salmoides (Pisces, Centrachidae; Lacépède, 1802) in a reservoir in southern Brazil. Brazilian Journal of Biology, 65 (2), 363–369.
http://dx.doi.org/10.1590/S1519-69842005000200021Schwarzbold, A. & Schäfer, A. (1984) Gênese e Morfologia das Lagoas Costeiras do Rio Grande do Sul - Brasil. Amazoniana, Kiel, 9 (1), 87–104.
Serra, J.P. & Langeani, F. (2015) A new Hasemania Ellis from the upper rio Paraná basin, with the redescription of Hasemania crenuchoides Zarske & Géry (Characiformes: Characidae). Neotropical Ichthyology, 13 (3), 479–486.
http://dx.doi.org/10.1590/1982-0224-20140107Silva, J.F.P. (2004) Two new species of Bryconamericus Eigenmann (Characiformes: Characidae) from southern Brazil. Neotropical Ichthyology, 2 (2), 55–60.
http://dx.doi.org/10.1590/S1679-62252004000200002Sosinski, L.T.W. (2004) Introdução da ruta arco-íris (Oncorhynchus mykiss) e suas consequências para a comunidade aquática dos rios de altitude do sul do Brasil. Unpublished Ph. D. Universidade Federal do Rio Grande do Sul, Porto Alegre, 246 pp.
Tencatt, L.F.C., Britto, M.R. & Pavanelli, C.S. (2016) Revisionary study of the armored catfish Corydoras paleatus (Jenyns, 1842) (Siluriformes: Callichthyidae) over 180 years after its discovery by Darwin, with description of a new species. Neotropical Ichthyology, 14 (1), 75–94.
http://dx.doi.org/1982-0224-20150089Vari, R.P. & Calegari, B.B. (2014) New species of the catfish genus Tatia (Siluriformes: Auchenipteridae) from the rio Teles Pires, upper rio Tapajós basin, Brazil. Neotropical Ichthyology, 12 (4), 667–674.
http://dx.doi.org/10.1590/1982-0224-20130193Vari, R.P. & Malabarba, L.R. (1998) Neotropical ichthyology: an overview. In: Malabarba, L.R., Reis, R.E., Vari, R.P., Lucena, Z.M.S. & Lucena, C.A.S. (Eds.), Phylogeny and classification of Neotropical fishes. Edipucrs, Porto Alegre, pp. 1–12.
Vitule, J.R.S. (2009) Introdução de peixes em ecossistemas continentais brasileiros: revisão, comentários e sugestões de ações contra o inimigo quase invisível. Neotropical Biology and Conservation, 4 (2), 111–122.
http://dx.doi.org/10.4013/nbc.2009.42.07Volcan, M.V., Lanés, L.E.K. & Cheffe, M.M. (2010) Distribuição e conservação de peixes anuais (Cyprinodontiformes: Rivulidae) no município de Chuí, sul do Brasil. Biotemas, 23 (4), 51–58.
http://dx.doi.org/10.5007/2175-7925.2010v23n4p51