@article{pavanelli_oliveira_2009,  title={A redescription of Astyanax gymnodontus (Eigenmann, 1911), new combination, a polymorphic characid fish from the rio Iguaçu basin, Brazil},  volume={7},  ISSN={1679-6225},  url={https://doi.org/10.1590/S1679-62252009000400003},  DOI={10.1590/S1679-62252009000400003},  number={4},  journal={Neotropical Ichthyology},  publisher={Sociedade Brasileira de Ictiologia},  author={Pavanelli, Carla Simone and Oliveira, Carlos Alexandre Miranda},  year={2009},  pages={569–578} }