Species up to 1900 Introduced:
| Amphibians-Frogs | Anaxyrus [=Bufo] boreas halophilus | Southern California Toad |
| Amphibians-Frogs | Eleutherodactylus planirostris | Greenhouse Frog |
| Amphibians-Frogs | Lithobates [=Rana] catesbeianus | American Bullfrog |
| Amphibians-Frogs | Rana aurora | Northern Red-legged Frog |
| Amphibians-Frogs | Rana nigromaculata | Black-spotted Frog |
| Amphibians-Frogs | Rana rugosa | Wrinkled Frog |
| Annelids-Polychaetes | Neanthes succinea | pile worm |
| Coelenterates-Hydrozoans | Clava multicornis | club hydroid |
| Coelenterates-Hydrozoans | Gonionemus vertens | clinging jellyfish |
| Coelenterates-Hydrozoans | Gonothyraea clarki | hydroid |
| Coelenterates-Hydrozoans | Obelia dichotoma | hydroid |
| Coelenterates-Hydrozoans | Sarsia tubulosa | clapper hydromedusa |
| Coelenterates-Hydrozoans | Tubularia crocea | a hydroid |
| Coelenterates-Scyphozoan | Drymonema dalmatinum | pink meanie |
| Crustaceans-Amphipods | Gammarus fasciatus | freshwater shrimp |
| Crustaceans-Barnacles | Balanus amphitrite | striped barnacle, purple acorn barnacle |
| Crustaceans-Barnacles | Balanus improvisus | bay barnacle |
| Crustaceans-Copepods | Eurytemora affinis | a calanoid copepod |
| Crustaceans-Crabs | Carcinus maenas | green crab |
| Crustaceans-Crayfish | Astacus nigrescens | sooty crayfish |
| Crustaceans-Isopods | Ligia exotica | wharf roach |
| Crustaceans-Isopods | Limnoria tripunctata | wood boring gribble |
| Crustaceans-Isopods | Sphaeroma quoyanum | an isopod |
| Crustaceans-Isopods | Sphaeroma terebrans | an isopod |
| Crustaceans-Isopods | Synidotea laevidorsalis | an isopod |
| Crustaceans-Lobsters | Homarus americanus | American lobster |
| Fishes | Alosa pseudoharengus | alewife |
| Fishes | Alosa sapidissima | American shad |
| Fishes | Ambloplites cavifrons | Roanoke bass |
| Fishes | Ambloplites rupestris | rock bass |
| Fishes | Ameiurus catus | white catfish |
| Fishes | Ameiurus melas | black bullhead |
| Fishes | Ameiurus natalis | yellow bullhead |
| Fishes | Ameiurus nebulosus | brown bullhead |
| Fishes | Anguilla rostrata | American eel |
| Fishes | Aplodinotus grunniens | freshwater drum |
| Fishes | Archoplites interruptus | Sacramento perch |
| Fishes | Carassius auratus | goldfish |
| Fishes | Catostomus catostomus | longnose sucker |
| Fishes | Catostomus commersonii | white sucker |
| Fishes | Channa maculata | blotched snakehead |
| Fishes | Chanos chanos | milkfish |
| Fishes | Clarias fuscus | whitespotted clarias |
| Fishes | Coregonus albula | vendace |
| Fishes | Coregonus artedi | cisco |
| Fishes | Coregonus clupeaformis | lake whitefish |
| Fishes | Coregonus lavaretus | powan |
| Fishes | Coregonus sp. | a whitefish |
| Fishes | Cyprinus carpio | common carp |
| Fishes | Dorosoma cepedianum | gizzard shad |
| Fishes | Esox americanus vermiculatus | grass pickerel |
| Fishes | Esox lucius | northern pike |
| Fishes | Esox masquinongy | muskellunge |
| Fishes | Fundulus catenatus | northern studfish |
| Fishes | Hiodon alosoides | goldeye |
| Fishes | Hiodon tergisus | mooneye |
| Fishes | Ictalurus pricei | Yaqui catfish |
| Fishes | Ictalurus punctatus | channel catfish |
| Fishes | Ictalurus punctatus? | Mississippi catfish |
| Fishes | Ictalurus sp. | catfish |
| Fishes | Lepomis cyanellus | green sunfish |
| Fishes | Lepomis gibbosus | pumpkinseed |
| Fishes | Lepomis gulosus | warmouth |
| Fishes | Lepomis macrochirus | bluegill |
| Fishes | Lepomis microlophus | redear sunfish |
| Fishes | Lepomis sp. | sunfish |
| Fishes | Leuciscus idus | ide |
| Fishes | Micropterus dolomieu | smallmouth bass |
| Fishes | Micropterus salmoides | largemouth bass |
| Fishes | Micropterus salmoides salmoides | northern largemouth bass |
| Fishes | Micropterus sp. | black bass |
| Fishes | Misgurnus anguillicaudatus | Oriental weatherfish |
| Fishes | Monopterus albus | Asian swamp eel |
| Fishes | Morone americana | white perch |
| Fishes | Morone chrysops | white bass |
| Fishes | Morone mississippiensis | yellow bass |
| Fishes | Morone saxatilis | striped bass |
| Fishes | Notemigonus crysoleucas | golden shiner |
| Fishes | Oncorhynchus clarkii lewisi | west slope cutthroat trout |
| Fishes | Oncorhynchus clarkii henshawi | Lahontan cutthroat trout |
| Fishes | Oncorhynchus clarkii seleniris | Paiute cutthroat trout |
| Fishes | Oncorhynchus clarkii | cutthroat trout |
| Fishes | Oncorhynchus clarkii utah | Bonneville cutthroat trout |
| Fishes | Oncorhynchus kisutch | coho salmon |
| Fishes | Oncorhynchus mykiss | rainbow trout |
| Fishes | Oncorhynchus mykiss irideus | coast rainbow trout |
| Fishes | Oncorhynchus nerka | kokanee, sockeye |
| Fishes | Oncorhynchus tshawytscha | Chinook salmon |
| Fishes | Osmerus mordax | rainbow smelt |
| Fishes | Perca flavescens | yellow perch |
| Fishes | Percopsis omiscomaycus | trout-perch |
| Fishes | Pimephales notatus | bluntnose minnow |
| Fishes | Pimephales promelas | fathead minnow |
| Fishes | Poecilia vivipara | Guaru |
| Fishes | Pomoxis annularis | white crappie |
| Fishes | Pomoxis nigromaculatus | black crappie |
| Fishes | Pomoxis sp. | crappie |
| Fishes | Prosopium cylindraceum | round whitefish |
| Fishes | Pterois volitans/miles | lionfish |
| Fishes | Pungitius pungitius | ninespine stickleback |
| Fishes | Salmo salar | Atlantic salmon |
| Fishes | Salmo salar salar | Atlantic salmon |
| Fishes | Salmo salar sebago | landlocked Atlantic salmon |
| Fishes | Salmo trutta | brown trout |
| Fishes | Salmo trutta levenensis | brown trout |
| Fishes | Salvelinus alpinus | Arctic char |
| Fishes | Salvelinus aureolus oquassa | blueback trout, Sunapee trout |
| Fishes | Salvelinus European sp. | European species of trout |
| Fishes | Salvelinus fontinalis | brook trout |
| Fishes | Salvelinus namaycush | lake trout |
| Fishes | Sander canadensis | sauger |
| Fishes | Sander vitreus | walleye |
| Fishes | Tautoga onitis | tautog |
| Fishes | Thymallus arcticus | Arctic grayling |
| Fishes | Tinca tinca | tench |
| Fishes | unknown sp. | trout |
| Mammals | Myocastor coypus | nutria |
| Mammals | Zalophus californicus | California sea lion |
| Mollusks-Bivalves | Crassostrea gigas | Pacific giant oyster |
| Mollusks-Bivalves | Crassostrea virginica | eastern oyster |
| Mollusks-Bivalves | Geukensia demissa | ribbed mussel |
| Mollusks-Bivalves | Lyrodus pedicellatus | blacktip shipworm |
| Mollusks-Bivalves | Macoma petalum | |
| Mollusks-Bivalves | Mya arenaria | softshell clam |
| Mollusks-Bivalves | Mytilus galloprovincialis | Mediterranean blue mussel |
| Mollusks-Bivalves | Ostrea conchaphila | Olympia oyster |
| Mollusks-Bivalves | Pisidium amnicum | greater European peaclam |
| Mollusks-Bivalves | Pisidium moitessierianum | pygmy peaclam |
| Mollusks-Bivalves | Sphaerium corneum | European fingernail clam |
| Mollusks-Gastropods | Bithynia tentaculata | mud bithynia, faucet snail |
| Mollusks-Gastropods | Cipangopaludina chinensis | Chinese mysterysnail |
| Mollusks-Gastropods | Crepidula convexa | convex slippersnail |
| Mollusks-Gastropods | Crepidula fornicata | common Atlantic slippersnail |
| Mollusks-Gastropods | Elimia virginica | Piedmont elimia |
| Mollusks-Gastropods | Littorina littorea | common periwinkle |
| Mollusks-Gastropods | Myosotella myosotis | marsh snail |
| Mollusks-Gastropods | Radix auricularia | European ear snail |
| Mollusks-Gastropods | Truncatella subcylindrica | looping snail |
| Mollusks-Gastropods | Urosalpinx cinerea | Atlantic oyster drill |
| Mollusks-Gastropods | Valvata piscinalis | European stream valvata |
| Mollusks-Gastropods | Viviparus georgianus | banded mysterysnail |
| Plants | Agrostis gigantea | Redtop, black bent, water bentgrass |
| Plants | Alopecurus geniculatus | water foxtail, marsh meadow-foxtail |
| Plants | Alternanthera philoxeroides | alligatorweed |
| Plants | Cabomba caroliniana | Carolina fanwort |
| Plants | Callitriche stagnalis | pond water-starwort |
| Plants | Carex disticha | Sedge |
| Plants | Carex flacca | Sedge |
| Plants | Chenopodium glaucum | Oak-leaved goosefoot |
| Plants | Conium maculatum | Poison hemlock |
| Plants | Cotula coronopifolia | brassbuttons |
| Plants | Echinochloa crusgalli | Barnyard grass |
| Plants | Egeria densa | Brazilian waterweed |
| Plants | Eichhornia crassipes | water-hyacinth |
| Plants | Epilobium hirsutum | Great hairy willow herb |
| Plants | Iris pseudacorus | yellow iris |
| Plants | Juncus compressus | Flattened rush |
| Plants | Juncus gerardii | Black-grass rush |
| Plants | Ludwigia octovalvis | Mexican primrose-willow, Mexican primrosewillow |
| Plants | Luziola peruviana | Peruvian watergrass |
| Plants | Lycopus asper | Western water horehound |
| Plants | Lysimachia nummularia | Moneywort |
| Plants | Lythrum salicaria | purple loosestrife |
| Plants | Marsilea quadrifolia | European water-clover |
| Plants | Marsilea vestita | hairy water-clover |
| Plants | Mentha aquatica | watermint |
| Plants | Mentha spicata | Spearmint |
| Plants | Myosotis scorpioides | True forget-me-not |
| Plants | Myosoton aquaticum | giant chickweed |
| Plants | Myriophyllum aquaticum | parrot feather, Brazilian watermilfoil |
| Plants | Najas marina | Spiny naiad |
| Plants | Nasturtium officinale | water-cress |
| Plants | Nymphaea ampla | dot-leaf water-lily |
| Plants | Nymphaea odorata | white water-lily |
| Plants | Nymphoides indica | water snowflake |
| Plants | Nymphoides peltata | yellow floating-heart |
| Plants | Panicum repens | torpedo grass |
| Plants | Pistia stratiotes | water-lettuce |
| Plants | Poa trivalis | rough-stalked meadow grass |
| Plants | Polygonum persicaria | Lady's thumb, smartweed, spotted knotweed |
| Plants | Potamogeton crispus | curly pondweed |
| Plants | Puccinellia distans | Weeping alkali grass |
| Plants | Rorippa sylvestris | Creeping yellow cress |
| Plants | Rumex obtusifolius | Bitter dock |
| Plants | Salix alba | White willow |
| Plants | Salix fragilis | Crack willow |
| Plants | Salix purpurea | Purple willow |
| Plants | Solanum dulcamara | Bittersweet nightshade |
| Plants | Sonchus arvensis | Field sow thistle |
| Plants | Spartina densiflora | dense-flowered cordgrass |
| Plants | Trapa natans | water-chestnut |
| Plants | Typha angustifolia | Narrow-leaved cattail |
| Plants | Urochloa (Brachiaria) mutica | para grass |
| Plants | Veronica beccabunga | European brooklime |
| Reptiles-Turtles | Apalone ferox | Florida Softshell |
| Reptiles-Turtles | Apalone spinifera | Spiny Softshell |
| Reptiles-Turtles | Chrysemys picta bellii | Western Painted Turtle |
| Reptiles-Turtles | Palea steindachneri | Wattle-necked Softshell |
| Reptiles-Turtles | Pelodiscus sinensis | Chinese Softshell |
| Sponges | Cliona sp. | boring sponge |
| Tunicates | Botryllus schlosseri | golden star tunicate |