Identification keys available for Order Gadiformes
| Key | Title |
| 53 | Key to the grenadiers (Macrouridae) of Europe |
| 54 | Key to the cod fishes (Gadidae) of Europe. |
| 91 | Key to the cods (Gadidae) of Canada. |
| 173 | Key to the species of grenadiers (Macrouridae) occurring in the Western Central Pacific. |
| 174 | Key to the genera of moras (Moridae) occurring in the Western Central Pacific. |
| 461 | Key to genera of Western Australian grenadiers. |
| 462 | Key to species of Caelorinchus from Western Australia. |
| 463 | Key to species of Coryphaenoides from Western Australia. |
| 464 | Key to species of Hymenocephalus from Western Australia. |
| 465 | Key to species of Kuronezumia from Western Australia. |
| 466 | Key to species of Mataeocephalus from Western Australia. |
| 467 | Key to species of Mesobius from Western Australia. |
| 468 | Key to Australian species of Nezumia. |
| 469 | Key to species of Gadomus from Western Australia. |
| 470 | Key to Western Australian species of Trachonurus. |
| 471 | Key to the Australian species of Ventrifossa. |
| 492 | Key to the Indian Ocean species of the genus Coryphaenoides. |
| 564 | Key to the species of Laemonema and Guttigadus. |
| 567 | Key to genera and some species of grenadiers from the New Caledonia region. |
| 732 | Key to families of gadiform fishes (Gadiformes) of the world. |
| 950 | Key to the species of grenadiers (rattails) (Macrouridae) occurring in the Western Central Atlantic. |
| 951 | Key to the species of bathygadids (Bathygadidae) occurring in the Western Central Atlantic. |
| 952 | Key to the species of moras (morid cods) (Moridae) occurring in the Western Central Atlantic. |
| 953 | Key to the species of phycid hakes (Phycidae) occurring in the Western Central Atlantic. |
| 954 | Key to the species of merlucciid hakes (Merlucciidae) occurring in the Western Central Atlantic. |
| 955 | Key to the species of true cods (Gadidae) occurring in the Western Central Atlantic. |
| 1193 | Key to the genera of Gadidae. |
| 1194 | Key to species of Arctogadus. |
| 1195 | Key to species of Ciliata. |
| 1196 | Key to species of Eleginus. |
| 1197 | Key to species of Gadus. |
| 1198 | Key to species of Microgadus. |
| 1199 | Key to species of Molva. |
| 1200 | Key to species of Phycis. |
| 1201 | Key to species of Pollachius. |
| 1202 | Key to species of Theragra. |
| 1203 | Key to species of Trisopterus. |
| 1204 | Key to species of Urophycis. |
| 1206 | Key to subfamilies of Macrouridae. |
| 1207 | Key to genera of subfamily Bathygadinae. |
| 1208 | Key to genera of subfamily Macrourinae. |
| 1209 | Key to species of Coryphaenoides. |
| 1210 | Key to species of Macrourus. |
| 1211 | Key to species of Malacocephalus. |
| 1212 | Key to Nominal Species of Mataeocephalus. |
| 1213 | Key to species of Sphagemacrurus. |
| 1214 | Key to genera of subfamily Macrouroidinae. |
| 1215 | Key to genera of subfamily Trachyrincinae. |
| 1216 | Key to species of Trachyrincus. |
| 1217 | Key to genera of Merlucciidae. |
| 1218 | Key to the species of Merluccius. |
| 1219 | Key to Atlantic genera of family Moridae. |
| 1220 | Key to Pacific and Indian Ocean genera of family Moridae. |
| 1221 | Key to species of Antimora. |
| 1222 | Key to species of Pseudophycis. |
| 1223 | Key to species of Tripterophycis. |
| 1225 | Key to species of the genus Hymenocephalus. |
| 1226 | Key to species of Caelorinchus. |
| 1227 | Key to species of Caelorinchus |
| 1228 | Key to species of Caelorinchus |
| 1229 | Key to species of Caelorinchus |
| 1230 | Key to species of Caelorinchus. |
| 1231 | Key to the adults of genus Ventrifossa. |