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 |
|---|---|---|---|
| Idaho giant salamander (Dicamptodon aterrimus) | Amphibians | Dicamptodontidae | Prohibited |
| Imienpo Station Frog (Glandirana emeljanovi) | Amphibians | Ranidae | Prohibited |
| Iranian Long-Legged frog (Rana macrocnemis) | Amphibians | Ranidae | Prohibited |
| Italian Agile frog (Rana latastei) | Amphibians | Ranidae | Prohibited |
| Italian Crested newt (Triturus carnifex) | Amphibians | Salamandridae | Prohibited |
| Italian green frog (Rana bergeri) | Amphibians | Ranidae | Prohibited |
| Italian Hybrid frog (Rana hispanica) | Amphibians | Ranidae | Prohibited |
| Italian newt (Triturus italicus) | Amphibians | Salamandridae | Prohibited |
| Italian Stream frog (Rana italica) | Amphibians | Ranidae | Prohibited |
| Iverson's Pond turtle (Mauremys iversoni) | Reptiles | Emydidae | Prohibited |
| Japanese brown frog (Rana japonica) | Amphibians | Ranidae | Prohibited |
| Japanese Clawed salamander (Onychodactylus japonicus) | Amphibians | Hynobiidae | Prohibited |
| Japanese oyster drill (Ocinebrellus inornatus) | Molluscs | Gastropoda | Unlisted |
| Japanese Pond turtle (Mauremys japonica) | Reptiles | Emydidae | Prohibited |
| Japanese Tree frog (Hyla japonica) | Amphibians | Hylidae | Prohibited |
| Japanese Tree toad (Hyla ussuriensis) | Amphibians | Hylidae | Prohibited |
| Karpathos Water frog (Rana cerigensis) | Amphibians | Ranidae | Prohibited |
| Kokarit frog (Rana lateralis) | Amphibians | Ranidae | Prohibited |
| Korean Golden frog (Rana chosenica) | Amphibians | Ranidae | Prohibited |
| Kurdistan newt (Neurergus microspilotus) | Amphibians | Salamandridae | Prohibited |
| Kwangtung River turtle (Chinemys nigricans) | Reptiles | Emydidae | Prohibited |
| Lake Urmia newt (Neurergus crocatus) | Amphibians | Salamandridae | Prohibited |
| Lamington Spiny crayfish (Euastacus sulcatus) | Crustaceans | Parastacidae | Prohibited |
| Land Yabby (Geocharax falcata) | Crustaceans | Parastacidae | Prohibited |
| Land Yabby (Parastacoides tasmanicus tasmanicus) | Crustaceans | Parastacidae | Prohibited |