Costa, W.J.E.M. & Brasil, G., 2004. Simpsonichthys radiosus sp. nov. (Teleostei: Cypriniformes: Rivulidae): a new annual killifish from the Rio Tocatins, central Brazil. Zootaxa 737: 1-7.
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Costa, W.J.E.M. & Cheffe, M.M., 2005. Austrolebias univentripinnis sp. nov. (Teleostei: Cyprinodontiformes: Rivulidae): a new annual killifish from the Mirim Lagoon basin, southern Brazil. Zootaxa 1052: 41-48.
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Costa, W.J.E.M., 2008. Simpsonichthys longignatus, a new seasonal killifish of the S. flammeus group from the Pacoti River basin, northeastern Brazil (Cyprinodontiformes: Rivulidae). Ichthyol. Explor. Freshwaters 19: 155-159.
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Costa, W.J.E.M., 2008. Rivulus jurubatibensis, a new aplocheiloid killifish from the southeastern Brazilian coastal plains (Cyprinodontiformes: Rivulidae). Ichthyol. Explor. Freshwater 19 (2): 135-140.
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Costa, W.J.E.M. & Lazzarotto, H., 2008. Rivulus amanan, a new killifish from the Japurá river drainage, Amazonas river basin, Brazil (Cyprinodontiformes: Rivulidae). Ichthyol. Explor. Freshwaters 19: 129-134.
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Ottoni, F.P. & Costa, W.J.E.M., 2008. Taxonomic revision of the genus Australoheros Rícan & Kullander, 2006 (Teleostei: Cichlidae) with descriptions of nine new species from southeastern Brazil. Vertebrate Zoology 58: 207-232.
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