@article{vari_ferraris jr._2009, title={New species of Cetopsidium (Siluriformes: Cetopsidae: Cetopsinae) from the upper rio Branco system in Guyana}, volume={7}, ISSN={1679-6225}, url={https://doi.org/10.1590/S1679-62252009000300001}, DOI={10.1590/S1679-62252009000300001}, number={3}, journal={Neotropical Ichthyology}, publisher={Sociedade Brasileira de Ictiologia}, author={Vari, Richard P. and Ferraris Jr., Carl J.}, year={2009}, month={Sept}, pages={289–293} }