1. Field Museum of Natural History, 1400 S. Lake Shore Dr., 60605 Chicago, IL, USA E-mail: hypophthalmus@gmail.com
2. Department of Ichthyology, The Academy of Natural Sciences, 1900 Benjamin Franklin Parkway, Philadelphia, PA, 19103, USA E-mail: johnlundb@gmail.com
3. Instituto Nacional de Pesquisas da Amazoônia (INPA), Av. André Araújo, 2936, Petrópolis CEP 69067-375, Manaus, AM, Brasil; Universidade do Estado do Amazonas (UEA) Escola Normal Superior (ENS), Av. Djalma Batista no 2470, Manaus, AM, Brasil E-mail: m