| Gnathophis Kaup, 1860 |
| Gnathophis bathytopos Smith & Kanazawa, 1977 |
| Gnathophis bracheatopos Smith & Kanazawa, 1977 |
| Gnathophis cinctus (Garman, 1899) |
| Gorgasia Meek & Hildebrand, 1923 |
| Gorgasia punctata Meek & Hildebrand, 1923 |
| Heteroconger Bleeker, 1868 |
| Heteroconger camelopardalis (Lubbock, 1980) |
| Heteroconger canabus (Cowan & Rosenblatt, 1974) |
| Heteroconger digueti (Pellegrin, 1923) |
| Heteroconger longissimus Günther, 1870 |
| Heteroconger luteolus Smith, 1989 |
| Heteroconger pellegrini Castle, 1999 |
| Heterocongrinae Günther, 1870 |
| Hildebrandia Jordan & Evermann, 1927 |
| Hildebrandia gracilior (Ginsburg, 1951) |
| Hildebrandia nitens (Jordan & Bollman, 1890) |
| Japonoconger Asano, 1958 |
| Japonoconger proriger (Gilbert, 1891) |
| Leptocephalus Scopoli, 1777 |