Identification keys available for FAO area Atlantic, Northeast
| Key | Title |
| 46 | Key to the marine fish families of Europe. |
| 47 | Key to the hound sharks (Triakidae) of Europe. |
| 48 | Key to the dogfish sharks/spurdogs (Squalidae) of Europe. |
| 49 | Key to the rays and skates (Rajidae) of Europe. |
| 50 | Key to the herrings (Clupeidae) of Europe. |
| 51 | Key to the barracudinas (Paralepididae) of Europe. |
| 52 | Key to the lanternfishes (Myctophidae) of Europe. |
| 53 | Key to the grenadiers (Macrouridae) of Europe |
| 54 | Key to the cod fishes (Gadidae) of Europe. |
| 55 | Key to the grey mullets (Mugilidae) of Europe. |
| 56 | Key to the pipefishes (Syngnathidae) of Europe. |
| 57 | Key to the scorpionfishes (Scorpaenidae) of Europe. |
| 59 | Key to the gurnards (Triglidae) of Europe. |
| 60 | Key to the sculpins (Cottidae) of Europe. |
| 61 | Key to the sea breams (Sparidae) of Europe. |
| 62 | Key to the wrasses (Labridae) of Europe. |
| 63 | Key to the eelpouts (Zoarcidae) of Europe. |
| 64 | Key to the wolffishes (Anarhichadidae) of Europe. |
| 65 | Key to the sand-eels (Ammodytidae) of Europe. |
| 66 | Key to the dragonets (Callionymidae) of Europe. |
| 67 | Key to the gobies (Gobiidae) of Europe. |
| 68 | Key to the scabbard-fishes (Trichiuridae) of Europe. |
| 69 | Key to the mackerel fishes (Scombridae) of Europe. |
| 70 | Key to the flatfishes (Pleuronectiformes) of Europe. |
| 72 | Key to the identification of fish larvae in the Northeast Atlantic. |
| 73 | Key to the catsharks/dogfishes (Scyliorhinidae) of Europe. |
| 84 | Key to the salmons (Salmonidae) of Europe. |
| 85 | Key to the pomfrets (Bramidae) of Europe. |