Author: Steindachner, 1876
Remark: zzzAT MORPHOLOGY STOCKS <i>P. brevis</i> is one member of a group of <i>Pyrrhulina</i> species that share certain characters such as a deeper body, a longer maxillary bone with many teeth, and caudal fin lobes of almost equal length.  This group includes <i>P. lugubris</i> in Colombia and Venezuela, <i>P. brevis</i>, <i>P. obermülleri</i>, <i>P. spilota</i> and a couple of new species in the upper Amazon in Peru. Marilyn Weitzman, pers. comm., Eschmeyer, 1998:282, Ortega & Vari, 1986:11.