Aquatic Invasive Species

Don't Move a Mussel

Aquatic invasive species (AIS) are nonindigenous species that threaten the diversity or abundance of native species or the ecological stability of infested waters, or commercial, agricultural, aquacultural or recreational activities dependent on such waters. AIS include nonindigenous species that may occur in inland, estuarine and marine waters and that presently or potentially threaten ecological processes and natural resources. In addition to adversely affecting activities dependent on waters of the United States, AIS adversely affect individuals, including health effects. One important criterion that the PSMFC uses to judge a species as a “nuisance” is its ability to harm commercial and recreationally important fisheries.


Aquatic invasive species are spread many ways, including being transported on boats, fishing gear, seaplanes, ballast water or other recreational or professional water based activities.  They can also be introduced through the release of aquarium pet or nursery plants. 


Beginning in 1999, recognizing the potentially huge economic impact to its operations from zebra mussels (and secondarily mitten crabs), the Pacific States Marine Fisheries Commission (PSMFC) began an aquatic invasive species prevention program. The program is supported by the Bonneville Power Administration, U.S. Fish and Wildlife Service, Sport Fish Restoration Program (USFWS) and NOAA Fisheries.  Since that time, all western states now have aquatic invasive species programs and are working together to protect waters of the West from the harmful impacts of AIS.





Prevention is the first line of defense.

Everyone can make a difference in the fight against invasive species by learning about how to prevent their movement.

Boat Owners:
Clean, Drain, and Dry
Anglers: Inspect and clean your gear, dispose of bait properly, and never move live fish from one body of water to another.

Pet Owners: Never release aquarium fish and plants, live bait or other exotic animals into the wild, don't dump your aquarium water into natural habitats, and make responsible pet purchases.

Outdoor enthusiasts: Inspect and remove mud from boots, gear and vehicle, and recognize and report invasives.    

          Clean Drain Dry  Inspect everything  Stop Aquatic Hitchhikers  wrp logo


Funding provided by:


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