| Nominal Species (n = 12) | Present allocation (n = 8) | Ref. |
|---|---|---|
| Hydrocyon armatus Jardine, 1841 | Hydrolycus armatus | 35435 |
| Rhaphiodon gibbus Agassiz, 1829 | Cynodon gibbus | 38270 |
| Cynodon meionactis Géry, Le Bail & Keith, 1999 | Cynodon meionactis | 35237 |
| Cynodon pectoralis Günther, 1866 | Hydrolycus scomberoides | 35435 |
| Hydropardus rapax Reinhardt, 1851 | Rhaphiodon vulpinus | 38270 |
| Hydrocynus scomberoides Cuvier, 1816 | Hydrolycus scomberoides | 26282 |
| Hydrocyon scomberoides Cuvier, 1819 | Hydrolycus scomberoides | 35439 |
| Cynodon septenarius Toledo-Piza, 2000 | Cynodon septenarius | 35437 |
| Salmo tamuco Kner, 1860 | Rhaphiodon vulpinus | 38270 |
| Hydrolycus tatauaia Toledo-Piza, Menezes & Santos, 1999 | Hydrolycus tatauaia | 35435 |
| Rhaphiodon vulpinus Spix & Agassiz, 1829 | Rhaphiodon vulpinus | 38270 |
| Hydrolycus wallacei Toledo-Piza, Menezes & Santos, 1999 | Hydrolycus wallacei | 35435 |