| Citation | Costa, W.J.E.M., 2005, Seven new species of the killifish genus Rivulus (Cyprinodontiformes: Rivulidae) from the Paraná, Paraguay and upper Araguaia river basins, central Brazil.. Neotrop. Ichthyol. 3(1):69-82. |
| Ref. | 54355 Costa, W.J.E.M., 2005 |
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| Named Used as Valid | Rivulus egens |
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