| Arthropoda-Insects | Agasicles hygrophila* | None | Non-native | Established | Biocontrol |
| Crustaceans-Barnacles | Amphibalanus amphitrite | 2004 | Non-native | Established | Ballast Water, Hull Fouling |
| Nematodes | Anguillicola crassus* | 2011 | Non-native | Established | Natural Dispersal |
| Arthropoda-Insects | Anisolabis maritima | 1853 | Non-native | Established | Cargo, Dry Ballast |
| Bryozoans | Arbopercula bengalensis | 2004 | Non-native | Established | None |
| Arthropoda-Insects | Arcola malloi* | 1971 | Non-native | Established | Biocontrol |
| Crustaceans-Barnacles | Balanus trigonus | 1977 | Non-native | Established | Ballast Water, Hull Fouling, Natural Dispersal |
| Cnidarians-Hydrozoans | Blackfordia virginica | 1978 | Non-native | Established | Ballast Water, Hull Fouling |
| Crustaceans-Amphipods | Caprella scaura | 2002 | Non-native | Established | Ballast Water, Hull Fouling |
| Crustaceans-Crabs | Charybdis hellerii | 1986 | Non-native | Established | Ballast Water, Natural Dispersal |
| Mollusks-Bivalves | Corbicula fluminea | 1974 | Non-native | Established | Discarded Bait, Fisheries Accidental (not Oyster), Fisheries Intentional, Pet Release |
| Cnidarians-Hydrozoans | Cordylophora caspia | 1974 | Non-native | Established | Aquatic Plant Shipments, Fisheries Accidental (not Oyster), Hull Fouling |
| Fishes | Cyprinus carpio | None | Non-native | Established | Fisheries Accidental (not Oyster), Fisheries Intentional |
| Cnidarians-Anthozoans | Diadumene lineata | 1978 | Non-native | Established | Hull Fouling |
| Fishes | Dorosoma petenense | 1974 | Non-native | Established | Fisheries Intentional |
| Annelids-Polychaetes | Ficopomatus enigmaticus | 2004 | Non-native | Established | Ballast Water, Hull Fouling |
| Algae | Gracilaria vermiculophylla | 2009 | Non-native | Established | Ballast Water, Hull Fouling, Natural Dispersal |
| Platyhelminthes | Gyrodactylus anguillae* | 1978 | Non-native | Established | Ballast Water, Fisheries Accidental (not Oyster) |
| Protozoans | Haplosporidium nelsoni* | 1991 | Non-native | Established | Hull Fouling, Natural Dispersal, Oyster Accidental |
| Bryozoans | Hippoporina indica | 2004 | Non-native | Established | Hull Fouling |
| Arthropoda-Insects | Holcocranum saturejae* | 1998 | Non-native | Established | Aquatic Plant Shipments, Cargo, Dry Ballast |
| Fishes | Ictalurus punctatus | None | Non-native | Established | None |
| Crustaceans-Amphipods | Laticorophium baconi | 2002 | Non-native | Established | Ballast Water, Hull Fouling |
| Crustaceans-Copepods | Lernaea cyprinacea | 1978 | Non-native | Established | Fisheries Accidental (not Oyster), Pet Release |
| Crustaceans-Isopods | Ligia exotica | 1891 | Non-native | Established | Cargo, Dry Ballast |
| Fishes | Lucania goodei | 1973 | Non-native | Established | Pet Release |
| Crustaceans-Shrimp | Macrobrachium nipponense | 2004 | Non-native | Established | Ballast Water, Pet Release |
| Crustaceans-Shrimp | Macrobrachium olfersii | 1988 | Non-native | Established | Aquatic Plant Shipments, Ballast Water, Pet Release |
| Crustaceans-Barnacles | Megabalanus coccopoma | 2006 | Non-native | Established | Ballast Water, Hull Fouling, Natural Dispersal |
| Cnidarians-Hydrozoans | Moerisia lyonsi | 1973 | Non-native | Established | Ballast Water, Hull Fouling |
| Mollusks-Gastropods | Myosotella myosotis | 1913 | Non-native | Established | Cargo, Dry Ballast |
| Arthropoda-Insects | Nacerdes melanura* | None | Non-native | Established | Cargo, Hull Fouling |
| Crustaceans-Isopods | Paradella dianae | 2007 | Non-native | Established | Ballast Water, Hull Fouling |
| Crustaceans-Shrimp | Penaeus monodon | 2008 | Non-native | Established | Fisheries Accidental (not Oyster), Natural Dispersal |
| Crustaceans-Crabs | Petrolisthes armatus | 1995 | Non-native | Established | Ballast Water, Hull Fouling, Natural Dispersal, Oyster Accidental |
| Cnidarians-Scyphozoans | Phyllorhiza punctata | 2007 | Non-native | Established | Ballast Water, Hull Fouling, Natural Dispersal |
| Platyhelminthes | Pseudodactylogyrus anguillae* | 1999 | Non-native | Established | Ballast Water, Fisheries Accidental (not Oyster) |
| Platyhelminthes | Pseudodactylogyrus bini* | 1999 | Non-native | Established | Fisheries Accidental (not Oyster) |
| Fishes | Pylodictis olivaris | 1991 | Non-native | Established | Fisheries Intentional |
| Mollusks-Bivalves | Rangia cuneata | 1978 | Non-native | Established | Ballast Water, Hull Fouling, Oyster Accidental |
| Crustaceans-Isopods | Sphaeroma terebrans | 1943 | Non-native | Established | Hull Fouling |
| Tunicates | Styela canopus | 2004 | Non-native | Established | Hull Fouling |
| Tunicates | Styela plicata | 1880 | Non-native | Established | Hull Fouling |
| Crustaceans-Isopods | Synidotea laticauda | 1998 | Non-native | Established | Ballast Water, Hull Fouling |
| Mollusks-Bivalves | Teredo navalis | 1922 | Non-native | Established | Ballast Water, Hull Fouling |
| Bryozoans | Victorella pavida | 1973 | Non-native | Established | Hull Fouling |