Identification keys available for FAO area America, North - Inland waters
| Key | Title |
| 44 | Key to the species of Tetragonopterus (Characidae: Tetragonopterinae) |
| 74 | Key to the lampreys (Petromyzontidae) of Canada. |
| 75 | Key to the sturgeons (Acipenseridae) of Canada. |
| 76 | Key to the gars (Lepisosteidae) of Canada. |
| 78 | Key to herrings (Clupeidae) of Canada. |
| 79 | Key to the salmons (Salmonidae) of Canada. |
| 80 | Key to the smelts (Osmeridae) of Canada. |
| 81 | Key to the mooneyes (Hiodontidae) of Canada. |
| 82 | Key to the mudminnows (Umbridae) of Canada. |
| 83 | Key to the pikes (Esocidae) of Canada. |
| 86 | Key to the minnows and carps (Cyprinidae) of Canada. |
| 87 | Key to the suckers (Catostomidae) of Canada. |
| 88 | Key to the catfishes (Ictaluridae) of Canada. |
| 90 | Key to the killifishes (Cyprinodontidae) of Canada. |
| 91 | Key to the cods (Gadidae) of Canada. |
| 92 | Key to the sticklebacks (Gasterosteidae) of Canada. |
| 93 | Key to the temperate basses (Percichthyidae) of Canada. |
| 94 | Key to the sunfishes (Centrarchidae) of Canada. |
| 95 | Key to the perches (Percidae) of Canada. |
| 96 | Key to the sculpins (Cottidae) of Canada. |
| 97 | Key to the families of fishes occurring in the fresh waters of Canada. |
| 98 | Key to the herrings (Clupeidae) of Canada. |
| 332 | Provisional Key to the families of Great Lakes Larval Fishes - (Yolk-sac larvae) (Excluding Anguillidae, Umbridae) |
| 333 | Provisional Key to the families of Great Lakes Larval Fishes - (Larvae) |
| 334 | Provisional Key to Great Lakes Petromyzontid Larvae. (Lampreys) |
| 335 | Provisional Key to Great Lakes Petromyzontid Larvae. (Lampreys) |
| 336 | Provisional Key to Great Lakes Clupeid Larvae - (Yolk-Sac Larvae). |
| 337 | Provisional Key to Great Lakes Clupeid Larvae (Herrings). |
| 338 | Provisional Key to Great Lakes Esocid Larvae (Pikes). |
| 339 | Provisional Key to Great Lakes Ictalurid Juveniles (bullhead catfishes, 15 to 25 mm). |
| 340 | Provisional Key to Great Lakes Salmonid Larvae, (trouts) (Yolk-sac larvae less than 20 mm TL). |
| 341 | Provisional Key to Great Lakes Salmonid Larvae, (Coregoninae) (from hatching to first fin ray development). |
| 342 | Provisional Key to Great Lakes Salmonid Larvae, (Coregoninae) (from first fin ray development to stage when all median fins basally rayed, pelvic buds appear toward end of stage). |
| 343 | Provisional Key to Great Lakes Salmonid Larvae, (Coregoninae) (full complement of median fin rays appear and pelvic buds or fins present). |
| 344 | Provisional Key to Great Lakes Salmonid Larvae, (Coregoninae) (juveniles - all fin rays are apparent yet not sexually mature). |
| 345 | Provisional Key to Great Lakes Salmonid Larvae, (Salmoninae) (from hatching and prior to first dorsal or anal fin ray development). |
| 346 | Provisional Key to Great Lakes Salmonid Larvae, (Salmoninae) (from first median fin ray development to presence of pelvic fin rays, parr marks absent, finfold and yolk sac persist). |
| 347 | Provisional Key to Great Lakes Salmonid Juveniles, (Salmoninae) (50 - 130 mm). |
| 348 | Provisional Key to Lake Michigan Catostomid Larvae (suckers). |
| 349 | Provisional Key to Genera of Great Lakes Centrarchid Larvae (sunfishes) (1 late yolk-sac larvae and larvae). |
| 350 | Provisional Key to Lake Michigan Cottid Larvae (sculpins) - Yolk-Sac Larvae |
| 351 | Provisional Key to Lake Michigan Cottid Larvae (sculpins) - Larvae |
| 1131 | Key to Mexican Etheostoma (Oligocephalus). |
| 1177 | Key to species of larval cyprinids syntopic with Pteronotropis hubbsi in Chemin a haut Bayou and elsewhere. |