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 |
|---|---|---|---|
| Yarra crayfish (Euastacus yarraensis) | Crustaceans | Parastacidae | Prohibited |
| Ringed crayfish (Orconectes neglectus) | Crustaceans | Cambaridae | Prohibited |
| Giant Tasmanian crayfish (Astacopis gouldi) | Crustaceans | Parastacidae | Prohibited |
| Northern crayfish (Orconectes virilus) | Crustaceans | Cambaridae | Prohibited |
| Spiny crayfish (Astacopis tricornus) | Crustaceans | Parastacidae | Prohibited |
| Fishhook waterflea (Cercopagis pengoi) | Crustaceans | Cercopagidae | Prohibited |
| Land Yabby (Geocharax falcata) | Crustaceans | Parastacidae | Prohibited |
| Spiny waterflea (Bythotrephes cederstroemi) | Crustaceans | Cercopagidae | Prohibited |
| Land Yabby (Parastacoides tasmanicus tasmanicus) | Crustaceans | Parastacidae | Prohibited |
| Chinese mitten crab (Eriocheir sinensis) | Crustaceans | Grapsidae | Prohibited |
| Yabby (Cherax albidus) | Crustaceans | Parastacidae | Prohibited |
| Red swamp crawfish (Procambarus clarkii) | Crustaceans | Cambaridae | Prohibited |
| Orange fingered Yabby (Cherax depressus) | Crustaceans | Parastacidae | Prohibited |
| Rusty crayfish (Orconectes rusticus) | Crustaceans | Cambaridae | Prohibited |
| Orange fingered Yabby (Cherax destructor) | Crustaceans | Parastacidae | Prohibited |
| Murray crayfish (Euastacus armatus) | Crustaceans | Parastacidae | Prohibited |
| Yabby (Cherax preissii) | Crustaceans | Parastacidae | Prohibited |
| Glenelg crayfish (Euastacus bispinosis) | Crustaceans | Parastacidae | Prohibited |
| Yabby (Cherax rotundus setotus) | Crustaceans | Parastacidae | Prohibited |
| Gippsland crayfish (Euastacus kershawi) | Crustaceans | Parastacidae | Prohibited |
| European green crab (Carcinus maenas) | Crustaceans | Portunidae | Prohibited |
| Spiny crayfish (Euastacus setosus) | Crustaceans | Parastacidae | Prohibited |
| Burrowing isopod (Sphaeroma quoyanum) | Crustaceans | Spheromatidae | Prohibited |
| Spiny crayfish (Euastacus spinifer) | Crustaceans | Parastacidae | Prohibited |
| Lamington Spiny crayfish (Euastacus sulcatus) | Crustaceans | Parastacidae | Prohibited |