Fisheries Resources
Pacific Region

Aquatic Invasive Species


What Aquatic invasive species (AIS are): AIS are non-native plants and animals introduced into a water body with the potential to harm the environment, people and/or the economy.

Why you should care: AIS directly harm native species and cause billions of dollars in damage. For example, zebra mussels alone (which do not yet occur in the Pacific Region) have contributed to population crashes among native fish and wildlife in the Great Lakes and cost that region hundreds of millions of dollars each year. Nearly two-thirds of all endangered fish and clams have been impacted by invasive non-native species. In addition to posing threats to species, hydropower generation, municipal water supplies and agricultural irrigation can also suffer tremendous losses from aquatic invaders.

What USFWS is doing about it: For aquatic invaders, the Fisheries Program of the USFWS co-chairs the Aquatic Nuisance Species Task Force, where we work in coordination with other federal agencies and partners to prevent and control aquatic nuisance species and serve as a significant source of federal expertise and support for action-oriented partnerships. In the Pacific Region, the 100th Meridian Initiative to prevent the western spread of the zebra mussel is one of our most important undertakings. We also provide funding to individual states (Oregon, Washington, Idaho and Hawaii) to help implement statewide aquatic nuisance species plans and also fund research on aquatic invasive species prevention and nuisance control. For example, USFWS is working in partnership with the University of Idaho and other organizations to reduce the spread and impacts of New Zealand Mud Snails.

Aquatic Nuisance Species Education Trunk

March 3rd-8th, 2013 is National Invasive Species Awareness Week (NISAW)!

Prevention First - Help Stop the Invasion!

Mitten Crab

Early Detection Makes A Difference

Asian Carp Credit: Asian Carp Control

Featured Invaders

Check out our profiled invaders: Asian carp and Nutria.


Watch nutria videos

Defining the Problem
  • What's in a Name? - Learn about various terms and definitions used to describe invasive species
  • Intruders Among Us! - Learn about nonnative aquatic species in the Columbia River Basin
Learn more

Get Involved

We're here to help! Here's our contact list of Pacific Region AIS coordinators.



Find a Fisheries Facility

Pacific Region Map State of Idaho Map State of Oregon Map State of Washington Map State of Hawaii & other Pacific Islands

Fisheries in the News

4/3/14 Steelhead study shows they can adapt    

3/31/14 Local biologists await fix at Wanapum Dam to allow fish passage    

3/31/14 Idaho River Project Highlights Environmental Values    

3/16/14 (Seattle Times) Wind River and Drano Lake open Sunday for spring chinook, but don't expect much action early on    

3/11/14 New lamprey passage at McNary Dam    

Connect With Us

rss icon RSS Follow Us At FlickrFlickr
Follow Us At FacebookFaceBook Follow Us At TwitterTwitter
webcam icon Webcam Follow Us At YouTubeYouTube

Last updated: January 27, 2014

Pacific Region Fisheries Resources
Pacific Region Home

U.S. Fish and Wildlife Service Home Page | Department of the Interior  |  | No Fear Act | About the U.S. Fish and Wildlife Service  | Accessibility  | Privacy  | Notices  | Disclaimer  | FOIA