| Taxonomic Group | Name | Year | Invasion Status | Population Status | Vectors |
|---|---|---|---|---|---|
| Mollusks-Gastropods | Bithynia tentaculata | 1880 | Definite | Established | Dry Ballast, Hull Fouling, Natural Dispersal, Packing Material |
| Cnidarians-Hydrozoans | Craspedacusta sowerbii | 1934 | Definite | Established | Aquatic Plant Shipments, Fisheries Accidental (not Oyster), Hull Fouling |
| Mollusks-Bivalves | Dreissena bugensis | 1992 | Definite | Established | Ballast Water |
| Mollusks-Bivalves | Dreissena polymorpha | 1986 | Definite | Established | Ballast Water |
| Mollusks-Gastropods | Potamopyrgus antipodarum | 2005 | Definite | Established | Ballast Water, Fisheries Accidental (not Oyster), Hull Fouling, Natural Dispersal |