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 |
|---|---|---|---|
| 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 |
| Terentjev's frog (Rana terentievi) | Amphibians | Ranidae | Prohibited |
| Three-toed Amphiuma (Amphiuma tridactylum) | Amphibians | Amphiumidae | Prohibited |
| Tiantai frog (Rana tientaiensis) | Amphibians | Ranidae | Prohibited |
| Tokyo Daruma pond frog (Rana porosa) | Amphibians | Ranidae | Prohibited |
| Tropical Clawed frog (Silurana tropicalis) | Amphibians | Pipidae | Prohibited |
| Tsinpa salamander (Pseudohynobius tsinpaensis) | Amphibians | Hynobiidae | Prohibited |
| Tsushima Brown frog (Rana tsushimensis) | Amphibians | Ranidae | Prohibited |
| Varaldi's Spadefoot toad (Pelobates varaldii) | Amphibians | Pelobatidae | Prohibited |
| Western Chinese Mountain salamander (Batrachuperus pinchonii) | Amphibians | Hynobiidae | Prohibited |
| Western Spadefoot toad (Spea hammondii) | Amphibians | Pelobatidae | Prohibited |
| Western Spadefoot toad (Pelobates cultripes) | Amphibians | Pelobatidae | Prohibited |
| Wood frog (Rana nigrolineata) | Amphibians | Ranidae | Prohibited |
| Wrinkled frog (Rana rugosa) | Amphibians | Ranidae | Prohibited |
| Wushan salamander (Liua shihi) | Amphibians | Hynobiidae | Prohibited |
| Yellow-spotted salamander (Pseudohynobius flavomaculatus) | Amphibians | Hynobiidae | Prohibited |
| Zhangcun frog (Rana zhengi) | Amphibians | Ranidae | Prohibited |
| Zhaoping Treefrog (Hyla zhaopingensis) | Amphibians | Hylidae | Prohibited |