rex, Priocharax Mattox [G. M. T.], Acosta-Santos [A.], Bogotá-Gregory [J. D.], Agudelo [E.] & Lima [F. C. T.] 2025:546, Figs. 1-4 [Zootaxa 5575 (no. 4); ref. 41898] Forest stream (caño) tributary of río Caraparaná, río Putumayo drainage, Corregimiento San Rafael, Departamento Amazonas, Colombia, 1°41'3"S, 73°14'15"W. Holotype: CIACOL 7935. Paratypes: CIACOL, CZUT-IC, ZUEC. Plus additional non-type material. •Valid as Priocharax rex Mattox, Acosta-Santos, Bogotá-Gregory, Agudelo & Lima 2025. Current status: Valid as Priocharax rex Mattox, Acosta-Santos, Bogotá-Gregory, Agudelo & Lima 2025. Acestrorhamphidae: Tyttobryconinae. Distribution: South America: middle Putumayo River drainage, Departamento Amazonas, Colombia. Habitat: freshwater.