Třída: Actinopterygii - paprskoploutví
Řád: Gymnotiformes - nahohřbetí
Čeleď: Apteronotidae - nožovkovití

Reference: Eigenmann, C. H. & W. R. Allen. 1942. Fishes of western South America. I. The intercordilleran and Amazonian lowlands of Peru. II.- The high pampas of Peru, Bolivia, and northern Chile. With a revision of the Peruvian Gymnotidae, and of the genus Orestias. Univ. Kentucky. Fishes West. S. America: i-xv + 1-494, Pls. 1-22.