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 |
|---|---|---|---|
| Southern Rock lobster (Jasus novaehollandiae) | Crustaceans | Panuliridae | Regulated |
| Spiny crayfish (Euastacus setosus) | Crustaceans | Parastacidae | Prohibited |
| Spiny crayfish (Euastacus spinifer) | Crustaceans | Parastacidae | Prohibited |
| Spiny crayfish (Euastacus valentulus) | Crustaceans | Parastacidae | Prohibited |
| Spiny crayfish (Euastacus woriwuru) | Crustaceans | Parastacidae | Prohibited |
| Spiny crayfish (Astacopis tricornus) | Crustaceans | Parastacidae | Prohibited |
| Spiny waterflea (Bythotrephes cederstroemi) | Crustaceans | Cercopagidae | Prohibited |
| Tetraclitella purpurascens (Tetraclitella purpurascens) | Crustaceans | Tetraclitidae | Regulated |
| Yabby (Cherax albidus) | Crustaceans | Parastacidae | Prohibited |
| Yabby (Cherax preissii) | Crustaceans | Parastacidae | Prohibited |
| Yabby (Cherax rotundus setotus) | Crustaceans | Parastacidae | Prohibited |
| Yarra crayfish (Euastacus yarraensis) | Crustaceans | Parastacidae | Prohibited |