Children (13 direct children, 13 direct and indirect children):
Grammonus thielei
Grammonus diagrammus
Purple brotula
Grammonus yunokawai
Grammonus longhursti
Grammonus ater
Grammonus robustus
Humpback brotula
Grammonus claudei
Reef-cave brotula
Grammonus waikiki
Grammonus minutus
Grammonus opisthodon
Grammonus nagaredai
Grammonus mowbrayi
Grammonus niger