Čeleď: Characidae Latreille, 1825
Rod: Creagrutus Günther, 1864
grutus tajemný
Vari, R. P. & A. S. Harold. 2001. Phylogenetic study of the neotropical fish genera Creagrutus Günther and Piabina Reinhardt (Teleostei: Ostariophysi: Characiformes), with revision of the Cis-Andean species. Smithson. Contrib. Zool. No. 613: i-v + 1-239.