| Key | Title |
| 1067 | Key for the identification of genera of Abyssocottidae family. |
| 1068 | Key for the identification of species of the genus Abyssocottus. |
| 1069 | Key for the identification of species of the genus Limnocottus. |
| 1070 | Key for the identification of species of the genus Asprocottus. |
| 1071 | Key for the identification of species of the genus Procottus. |
| 1072 | Key for the identification of species of the genus Cyphocottus. |
| 1073 | Key for the identification of species of the genus Neocottus. |