| Fishes | Acanthogobius flavimanus | 1990 | Definite | Established | Discarded Bait, Natural Dispersal |
| Crustaceans-Barnacles | Amphibalanus amphitrite | 2003 | Definite | Established | Ballast Water, Natural Dispersal |
| Mollusks-Bivalves | Arcuatula senhousia | 1995 | Definite | Established | Natural Dispersal |
| Fishes | Gambusia affinis | 1997 | Definite | Established | Biocontrol |
| Crustaceans-Amphipods | Grandidierella japonica | 1995 | Definite | Established | Ballast Water |
| Crustaceans-Amphipods | Jassa marmorata | 2005 | Definite | Established | Ballast Water, Discarded Bait |
| Mollusks-Bivalves | Magallana gigas | 2005 | Definite | Established | Ballast Water, Oyster Intentional |
| Mollusks-Bivalves | Mytilus galloprovincialis | 1995 | Definite | Established | Hull Fouling, Natural Dispersal |
| Crustaceans-Shrimp | Palaemon macrodactylus | 1995 | Definite | Established | Ballast Water, Discarded Bait, Natural Dispersal |
| Annelids-Polychaetes | Polydora cornuta | 2000 | Definite | Established | Hull Fouling, Natural Dispersal |
| Annelids-Polychaetes | Streblospio benedicti | 1982 | Definite | Established | Ballast Water |
| Annelids-Oligochaetes | Tubificoides brownae* | 2004 | Definite | Established | Dry Ballast, Unknown Vector |
| Bryozoans | Victorella pavida | 2004 | Definite | Established | None |