| Taxonomic Group | Name | Year | Invasion Status | Population Status | Vectors |
|---|---|---|---|---|---|
| Fishes | Alosa sapidissima | 1891 | Definite | Established | None |
| Crustaceans-Copepods | Harpacticella paradoxa | 2000 | Definite | Established | Fisheries Accidental (not Oyster) |
| Crustaceans-Crayfish | Pacifastacus leniusculus | None | Definite | Established | Fisheries Intentional |
| Fishes | Perca flavescens | 1951 | Definite | Established | Fisheries Intentional |