- Descrito por / Described by:
Albert Günther, 1864

- Nome original / Original name:
Tetragonopterus petenensis

- Nome do artigo / Article name:
Catalogue of the fishes in the British Museum. Catalogue of the Physostomi, containing the families Siluridae, Characinidae, Haplochitonidae, Sternoptychidae, Scopelidae, Stomiatidae in the collection of the British Museum.

- Publicado em / Published in:
Catalogue of the fishes in the British Museum v. 5: i-xxii + 1-455.

- Localidade tipo / Type locality:
Lago Petén [Petén Itza], Guatemala; Equador ocidental. / Lake Petén [Petén Itza], Guatemala; western Ecuador.