n = 12
| Scientific Name | Author | Valid Name | Family | English Name |
|---|---|---|---|---|
| Grammonus ater | (Risso, 1810) | Grammonus ater | Bythitidae | |
| Grammonus claudei | (Torre y Huerta, 1930) | Grammonus claudei | Bythitidae | Reef-cave brotula |
| Grammonus diagrammus | (Heller & Snodgrass, 1903) | Grammonus diagrammus | Bythitidae | Purple brotula |
| Grammonus longhursti | (Cohen, 1964) | Grammonus longhursti | Bythitidae | |
| Grammonus minutus | Nielsen & Prokofiev, 2010 | Grammonus minutus | Bythitidae | |
| Grammonus mowbrayi | Grey, 1951 | Grammonus claudei | Bythitidae | Reef-cave brotula |
| Grammonus nagaredai | Randall & Hughes, 2008 | Grammonus nagaredai | Bythitidae | |
| Grammonus opisthodon | Smith, 1934 | Grammonus opisthodon | Bythitidae | Bighead brotula |
| Grammonus robustus | Smith & Radcliffe, 1913 | Grammonus robustus | Bythitidae | |
| Grammonus thielei | Nielsen & Cohen, 2004 | Grammonus thielei | Bythitidae | |
| Grammonus waikiki | (Cohen, 1964) | Grammonus waikiki | Bythitidae | |
| Grammonus yunokawai | Nielsen, 2007 | Grammonus yunokawai | Bythitidae |