WDFW LogoWashington Department of Fish & Wildlife
WDFW LogoConservation

To report an AIS
sighting or to find out
more information call

Questions or comments regarding the state's Aquatic Invasive Species and Ballast Water Management Programs may be directed to:

Allen Pleus
AIS Coordinator
(360) 902-2724

View WAC 220-12-090
Classification - Nonnative aquatic
animal species with photos

Ctenopharyngodon idella (Grass carp)

Animal Fish
Family: Cyprinidae
Classification: Prohibited

Grass Carp
from 9” to 29” and nearly
20 lbs. in 16 months

Carp are extremely fast-growing fish. In areas where diploid grass carp, or Asian carp species, have been introduced they out compete other species for food, and remove vegetation that provides habitat necessary for other species for reproduction. They also increase turbidity and deplete dissolved oxygen in the water.