Children (9 direct children, 9 direct and indirect children):
Ruffe
Eurasian ruffe
Gymnocephalus acerina
Donets ruffe
Ammersee ruffe
Gymnocephalus ambriaelacus
Balon's ruffe
Gymnocephalus baloni
Schraetzer
Striped ruffe
Gymnocephalus acerinus
Gymnocephalus cernuus
Ruffe
Gymnocephalus messanensis
Gymnocephalus ruber