Search for aquatic invasive species

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
Spectacled salamander (Salamandrina terdigitata) Amphibians Salamandridae Prohibited
Spiny crayfish (Astacopis tricornus) Crustaceans Parastacidae Prohibited
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 Softshell turtle (Apalone spinifer) Reptiles Trionychidae Prohibited
Spiny waterflea (Bythotrephes cederstroemi) Crustaceans Cercopagidae Prohibited
Spot-Tailed Warty newt (Paramesotriton caudopunctatus) Amphibians Salamandridae Prohibited
Spotless Paddle Tail newt (Pachytriton labiatus) Amphibians Salamandridae Prohibited
Spotted Paddle Tail newt (Pachytriton brevipes) Amphibians Salamandridae Prohibited
Spotted turtle (Clemmys gutatta) Reptiles Emydidae Prohibited
Strauch's Spotted newt (Neurergus strauchii strauchii) Amphibians Salamandridae Prohibited
Stream Brown frog (Rana sakuraii) Amphibians Ranidae Prohibited
Striped newt (Notophthalmus perstriatus) Amphibians Salamandridae Prohibited
Suweon Tree frog (Hyla suweonensis) Amphibians Hylidae Prohibited
Tago frog (Rana tagoi) Amphibians Ranidae Prohibited
Taibai Stream salamander (Batrachuperus taibaiensis) Amphibians Hynobiidae Prohibited
Tam Dao Warty newt (Paramesotriton deloustali) Amphibians Salamandridae Prohibited
Tarahumara salamander (Ambystoma rosaceum) Amphibians Ambystomatidae Prohibited
Tench (Tinca tinca) Fish Cyprinidae Regulated
Terentjev's frog (Rana terentievi) Amphibians Ranidae Prohibited
Tetraclitella purpurascens (Tetraclitella purpurascens) Crustaceans Tetraclitidae Regulated
Three-toed Amphiuma (Amphiuma tridactylum) Amphibians Amphiumidae Prohibited
Tiantai frog (Rana tientaiensis) Amphibians Ranidae Prohibited