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 |
|---|---|---|---|
| Chinese Warty newt (Paramesotriton chinensis) | Amphibians | Salamandridae | Prohibited |
| Tam Dao Warty newt (Paramesotriton deloustali) | Amphibians | Salamandridae | Prohibited |
| Hong Kong Warty newt (Paramesotriton hongkongensis) | Amphibians | Salamandridae | Prohibited |
| Spectacled salamander (Salamandrina terdigitata) | Amphibians | Salamandridae | Prohibited |
| Red-bellied newt (Taricha rivularis) | Amphibians | Salamandridae | Prohibited |
| Sierra newt (Taricha torosa) | Amphibians | Salamandridae | Prohibited |
| Bosca's newt (Triturus boscai) | Amphibians | Salamandridae | Prohibited |
| Italian Crested newt (Triturus carnifex) | Amphibians | Salamandridae | Prohibited |
| Great Crested newt (Triturus cristatus) | Amphibians | Salamandridae | Prohibited |
| Danube Crested newt (Triturus dobrogicus) | Amphibians | Salamandridae | Prohibited |
| Palmate newt (Triturus helveticus helveticus) | Amphibians | Salamandridae | Prohibited |
| Italian newt (Triturus italicus) | Amphibians | Salamandridae | Prohibited |
| Southern Crested newt (Triturus karelinii) | Amphibians | Salamandridae | Prohibited |
| Marbeled newt (Triturus marmoratus marmoratus) | Amphibians | Salamandridae | Prohibited |
| Carpathian newt (Triturus montandoni) | Amphibians | Salamandridae | Prohibited |
| Banded newt (Triturus vittatus ophryticus) | Amphibians | Salamandridae | Prohibited |
| Smooth newt (Triturus vulgaris lantzi) | Amphibians | Salamandridae | Prohibited |
| Northern Dwarf siren (Pseudobranchus striatus striatus) | Amphibians | Sirenidae | Prohibited |
| Eastern Lesser siren (Siren intermedia intermedia) | Amphibians | Sirenidae | Prohibited |
| Greater siren (Siren lacertina) | Amphibians | Sirenidae | Prohibited |
| Atlantic salmon (Salmo salar) | Fish | Salmonidae | Regulated |
| Gammarella berringar (Gammarella berringar) | Crustaceans | Melitidae | Regulated |
| Tetraclitella purpurascens (Tetraclitella purpurascens) | Crustaceans | Tetraclitidae | Regulated |
| Rough Shore crab (Cyclograpsus granulosus) | Crustaceans | Grapsidae | Regulated |
| Australian Porcelain crab (Petrocheles australiensis) | Crustaceans | Porcellanidae | Regulated |