Erstbeschreibung: Eigenmann, Carl H & C. H. Kennedy. 1903. „On a collection of fishes from Paraguay, with a synopsis of the American genera of cichlids“. Proceedings of the Academy of Natural Sciences of Philadelphia
Typusart: Saraca opercularis STEINDACHNER, 1875
Beheimatet in: Brasilien, Kolumbien
Beschriebene Arten:
Biotoecus dicentrarchus KULLANDER, 1989
Biotoecus opercularis STEINDACHNER, 1875