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Most Un-Wanted

Most Un-Wanted List

Area of Concern

 Introduced Species

Type of Threat

   
Western US

New Zealand Mudsnail

Displacement of food base/Community Disruption
  
Intermountain West

Brook Trout

 Competition with Native Trout
   
Yellowstone Lake

  Lake Trout

 Predation/Competition with Native Cutthroat Trout
   
Great Lakes/Pacific Northwest

Cherry Salmon

 

   
Eastern half US and California

Snakeheads

Predation/Competition with Native Species
   
Across the US

Rudd

Competition and Hybridization with Native Forage Species.
   
Intermountain West

Whirling Disease

 Disease of Native Trout
      
Pacific Northwest and SE Alaska

Atlantic Salmon

Competition/Potential for Disease Transmission
   
Lower 48 States except MT and WY

Eurasian Water-Milfoil

Displacment of Native Aquatic Vegetation/Community Disruption
   
Eastern US

Zebra Mussels

Competition/Community Distruption