Autapomorphy of Bryconamericus thomasi:

1. Canal of lateral line on caudal-fin membrane (92): (1> 0) absent. Reversal of synapomorphy 3 of the Characidae . Paralleled in the Aphyoditeinae and Bryconops clade, in nodes 227, 229, 244, 287, 294, and 298, and in Aphyocharax nattereri, Bryconamericus rubropictus, Charax stenopterus, Hyphessobrycon anisitsi, Inpaichthys kerri, and Phenacogaster tegatus .