@article{oliveira_goulart_minte-vera_2004,  title={Fish diversity along spatial gradients in the Itaipu Reservoir, Paraná, Brazil},  volume={64},  ISSN={1519-6984},  url={https://doi.org/10.1590/S1519-69842004000300008},  DOI={10.1590/S1519-69842004000300008},  number={3a},  journal={Brazilian Journal of Biology},  publisher={Instituto Internacional de Ecologia},  author={Oliveira, E. F. and Goulart, E. and Minte-Vera, C. V.},  year={2004},  month={Aug},  pages={447–458} }