| Port Name | Species Name | Introduction Year |
|---|
| Hamina | (Cercopagis) pengoi | 2020 |
| Hamina | neglecta | 2020 |
| Hamina | polymorpha | 2020 |
| Hamina | tigrinus | 2020 |
| Helsinki | (Cercopagis) pengoi | 2020 |
| Helsinki | elegans | 2020 |
| Helsinki | leucophaeata | 2020 |
| Helsinki | melanostomus | 2020 |
| Helsinki | neglecta | 2020 |
| Helsinki | tigrinus | 2020 |
| Kokkola | neglecta | 2020 |
| Kokkola | tigrinus | 2020 |
| Kotka | (Cercopagis) pengoi | 2020 |
| Kotka | neglecta | 2020 |
| Kotka | tigrinus | 2020 |
| Naantali | (Cercopagis) pengoi | 2020 |
| Naantali | elegans | 2020 |
| Naantali | harrisii | 2020 |
| Naantali | leucophaeata | 2020 |
| Naantali | melanostomus | 2020 |
| Naantali | tigrinus | 2020 |
| Skoldvik | (Cercopagis) pengoi | 2020 |
| Skoldvik | elegans | 2020 |
| Skoldvik | leucophaeata | 2020 |
| Skoldvik | melanostomus | 2020 |
| Skoldvik | neglecta | 2020 |
| Turku | (Cercopagis) pengoi | 2020 |
| Turku | elegans | 2020 |
| Turku | harrisii | 2020 |
| Turku | leucophaeata | 2020 |
| Turku | tigrinus | 2020 |