| # | Species | Year | Period | From - To | Reason | Established in the wild | Ref. no. |
| 1 | Astacus astacus | 1850 | 19th century | Unspecified - Lake Steinsfjorden | unknown | yes | 080798 |
| 2 | Astacus astacus | 1920 | 1900-1924 | Unspecified - Rögle (Skäne) | other pest control | yes | 080792 |
| 3 | Ensis directus | 2011 | 1975-present | Elbe Estuary - Northern Spain | ballast water | 114899 | |
| 4 | Pontastacus leptodactylus | unknown | Turkey - Italy | unknown | yes | 126939 | |
| 5 | Pontastacus leptodactylus | unknown | Turkey - Poland | other reasons | yes | 126939 |