@article{mcmahan_matamoros_elías_piller_2019,  title={Species or population? Systematic status of <i><i>Vieja coatlicue</i></i> (Teleostei: Cichlidae)},  volume={17},  ISSN={1679-6225},  url={https://doi.org/10.1590/1982-0224-20190004},  DOI={10.1590/1982-0224-20190004},  number={2},  journal={Neotropical Ichthyology},  publisher={Sociedade Brasileira de Ictiologia},  author={McMahan, Caleb D. and Matamoros, Wilfredo A. and Elías, Diego J. and Piller, Kyle R.},  year={2019},  pages={e190004} }