| Nominal Species (n = 31) | Present allocation (n = 21) | Ref. |
|---|---|---|
| Nansenia ahlstromi Kawaguchi & Butler, 1984 | Nansenia ahlstromi | 5123 |
| Nansenia antarctica Kawaguchi & Butler, 1984 | Nansenia antarctica | 5123 |
| Nansenia ardesiaca Jordan & Thompson, 1914 | Nansenia ardesiaca | 7300 |
| Microstoma argenteum Valenciennes, 1846 | Microstoma microstoma | 4458 |
| Microstoma argenteum oblitum Facciolà, 1887 | Nansenia oblita | 4458 |
| Nansenia atlantica Blache & Rossignol, 1962 | Nansenia atlantica | 4458 |
| Microstoma australis Gon & Stewart, 2014 | Microstoma australis | 97677 |
| Nansenia boreacrassicauda Poulsen, 2015 | Nansenia boreacrassicauda | 104906 |
| Nansenia candida Cohen, 1958 | Nansenia candida | 5123 |
| Nansenia crassa Lavenberg, 1965 | Nansenia crassa | 35612 |
| Xenophthalmichthys danae Regan, 1925 | Xenophthalmichthys danae | 4458 |
| Microstomus groenlandicus Reinhardt, 1840 | Nansenia groenlandica | 26165 |
| Nansenia iberica Matallanas, 1985 | Nansenia iberica | 36162 |
| Nansenia indica Kobyliansky, 1992 | Nansenia indica | 41397 |
| Nansenia longicauda Kawaguchi & Butler, 1984 | Nansenia longicauda | 5123 |
| Bathymacrops macrolepis Gilchrist, 1922 | Nansenia macrolepis | 3978 |
| Bathymacrops macrolepis (non Gilchrist, 1922) | Nansenia groenlandica | 26165 |
| Microstoma mediterranea Cuvier, 1837 | Microstoma microstoma | 4458 |
| Nansenia megalopa Kawaguchi & Butler, 1984 | Nansenia megalopa | 5123 |
| Gasteropelecus microstoma Risso, 1810 | Microstoma microstoma | 3978 |
| Nansenia obscura Kobyliansky & Usachev, 1992 | Nansenia obscura | 41397 |
| Nansenia pelagica Kawaguchi & Butler, 1984 | Nansenia pelagica | 5123 |
| Microstoma rissoanum Sarato, 1887 | Nansenia oblita | 4458 |
| Nansenia robusta Abe, 1976 | Nansenia ardesiaca | 5123 |
| Microstoma rotundata Risso, 1827 | Microstoma microstoma | 4458 |
| Nansenia sanrikuensis Kanayama & Amaoka, 1983 | Nansenia candida | 43939 |
| Microstoma schmitti Fowler, 1934 | Nansenia ardesiaca | 5123 |
| Prososcopa stilbia Rass, 1961 | Xenophthalmichthys danae | 4458 |
| Nansenia tanakai Schmidt, 1918 | Nansenia ardesiaca | 5123 |
| Nansenia tenera Kawaguchi & Butler, 1984 | Nansenia tenera | 5123 |
| Nansenia tenuicauda Kawaguchi & Butler, 1984 | Nansenia tenuicauda | 5123 |