Autapomorphies of Bryconamericus agna:

Some trees:

1. Length of ascending process of premaxilla (104): (0> 1) reaching just anterior end of nasal. (some trees under k9-14). Paralleled in nodes 225 and 294 and in Charax stenopterus, Phenacogaster tegatus, and Stichonodon insignis .

2. Cusps of teeth on outer premaxillary row (125): (0> 1) five or more cusps. (some trees under k9-14). Paralleled in nodes 265 and 294 and in Brycon orbignyanus, Bryconops melanurus, Gymnocharacinus bergii, Micralestes stormsi, and Nematocharax venustus .