Aquatic invasive species (AIS) pose an ongoing threat to Washington's environment and economy. Find out which species are considered invasive in Washington.
| Species | Category | Family | AIS classification |
|---|---|---|---|
| European green crab (Carcinus maenas) | Crustaceans | Portunidae | Prohibited |
| Fishhook waterflea (Cercopagis pengoi) | Crustaceans | Cercopagidae | Prohibited |
| Northern snakehead (Channa argus) | Fish | Channidae | Prohibited |
| Common snapping turtle (Chelydra serpentina) | Reptiles | Chelydridae | Prohibited |
| Yabby (Cherax albidus) | Crustaceans | Parastacidae | Prohibited |
| Orange fingered Yabby (Cherax depressus) | Crustaceans | Parastacidae | Prohibited |
| Orange fingered Yabby (Cherax destructor) | Crustaceans | Parastacidae | Prohibited |
| Yabby (Cherax preissii) | Crustaceans | Parastacidae | Prohibited |
| Yabby (Cherax rotundus setotus) | Crustaceans | Parastacidae | Prohibited |
| Kwangtung River turtle (Chinemys nigricans) | Reptiles | Emydidae | Prohibited |
| Reeve's turtle (Chinemys reevesii) | Reptiles | Emydidae | Prohibited |
| Chinese Broad-headed turtle (Chinemys reevesii megalocephala) | Reptiles | Emydidae | Prohibited |
| Chioglossa lusitanica (Chioglossa lusitanica ) | Amphibians | Salamandridae | Prohibited |
| Vase tunicate (Ciona intestinalis) | Tunicate/Sea-squirt | Cionidae | Unlisted |
| Solitary sea squirt (Ciona savignyi) | Tunicate/Sea-squirt | Cionidae | Unlisted |
| Walking catfish (Clarias batrachus) | Fish | Clariidae | Prohibited |
| Blackskin catfish (Clarias meladerma) | Fish | Clariidae | Prohibited |
| Spotted turtle (Clemmys gutatta) | Reptiles | Emydidae | Prohibited |
| Wood turtle (Clemmys insculpta) | Reptiles | Emydidae | Prohibited |
| Bog turtle (Clemmys muhlenbergii) | Reptiles | Emydidae | Prohibited |
| Hellbender (Cryptobranchus alleganiensis) | Amphibians | Cryptobranchidae | Prohibited |
| Grass carp (Ctenopharyngodon idella) | Fish | Cyprinidae | Prohibited |
| Triploid Grass Carp (Ctenopharyngodon idella - Tripliod) | Fish | Cyprinidae | Regulated |
| Rough Shore crab (Cyclograpsus granulosus) | Crustaceans | Grapsidae | Regulated |
| Common carp (Cyprinus carpio carpio) | Fish | Cyprinidae | Regulated |