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 |
|---|---|---|---|
| Bowfin, Grinnel, or Mudfish (Amia calva) | Fish | Amiidae | Prohibited |
| Burrowing isopod (Sphaeroma quoyanum) | Crustaceans | Spheromatidae | Prohibited |
| California Giant salamander (Dicamptodon ensatus (Not: D. tenebrosus; D. copei)) | Amphibians | Dicamptodontidae | Prohibited |
| California Tiger salamander (Ambystoma californiense) | Amphibians | Ambystomatidae | Prohibited |
| Carpathian newt (Triturus montandoni) | Amphibians | Salamandridae | Prohibited |
| Caspian Pond turtle (Mauremys caspica) | Reptiles | Emydidae | Prohibited |
| Central Asiatic frog (Rana asiatica) | Amphibians | Ranidae | Prohibited |
| Chain tunicate (Botrylloides violaceus) | Tunicate/Sea-squirt | Botryllidae | Unlisted |
| Chaochiao brown frog (Rana chaochiaoensis) | Amphibians | Ranidae | Prohibited |
| Chevron-spotted Brown frog (Rana chevronta) | Amphibians | Ranidae | Prohibited |
| Chinese Broad-headed turtle (Chinemys reevesii megalocephala) | Reptiles | Emydidae | Prohibited |
| Chinese Giant salamander (Andrias davidianus) | Amphibians | Cryptobranchidae | Prohibited |
| Chinese mitten crab (Eriocheir sinensis) | Crustaceans | Grapsidae | Prohibited |
| Chinese rock frog (Rana tenggerensis) | Amphibians | Ranidae | Prohibited |
| Chinese salamander (Hynobius chinensis) | Amphibians | Hynobiidae | Prohibited |
| Chinese Tree frog (Hyla chinensis) | Amphibians | Hylidae | Prohibited |
| Chinese Warty newt (Paramesotriton chinensis) | Amphibians | Salamandridae | Prohibited |
| Chioglossa lusitanica (Chioglossa lusitanica ) | Amphibians | Salamandridae | Prohibited |
| Clouded salamander (Hynobius nebulosus) | Amphibians | Hynobiidae | Prohibited |
| Clubbed Tunicate (Styela clava) | Tunicate/Sea-squirt | Styelidae | Unlisted |
| Colonial sea squirt (Didemnum vexillum) | Tunicate/Sea-squirt | Didemnidae | Unlisted |
| Common carp (Cyprinus carpio carpio) | Fish | Cyprinidae | Regulated |
| Common frog (Rana temporaria) | Amphibians | Ranidae | Prohibited |
| Common Hermit crab (Paguristes frontalis) | Crustaceans | Diogenidae | Regulated |
| Common snapping turtle (Chelydra serpentina) | Reptiles | Chelydridae | Prohibited |