Třída: Actinopterygii - paprskoploutví
Řád: Characiformes - trnobřiší
Čeleď: Characidae - tetrovití

Reference: Vari, R. P. & H. Ortega. 2000. Attonitus, a new genus of sexually dimorphic characiforms (Ostariophysi: Characidae) from western Amazonia; a phylogenetic definition and description of three new species. Ichthyol. Explor. Freshwaters v. 11 (no. 2): 113-140.