- Descrito por / Described by:
Carl H. Eigenmann, 1907

- Nome original / Original name:
Hemigrammus riddlei

- Nome do artigo / Article name:
An annotated list of characin fishes in the United States National Museum and the Museum of Indiana University, with descriptions of new species.

- Publicado em / Published in:
Proceedings of the United States National Museum v. 33 (no. 1556): 1-36.

- Localidade tipo / Type locality:
Los Castillas, no Orinoco. / Los Castillas, on the Orinoco,