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Alligatorweed

(Alternanthera philoxeroides)

Overview

Pennsylvania

iMapInvasives

It is unlawful to possess, introduce or import, transport, sell, purchase, offer for sale or barter the following live species in the Commonwealth of Pennsylvania.

Silver carp & Bighead carp

Hypophtalmichtys molitrix & Hypophtalmichtys nobilis

Photo credit: © Katie Steiger-Meister/USFWS

Rusty crayfish

Orconectes rusticus

Photo credit: U.S. Geological Survey, Bugwood.org

Quagga mussels

Dreissena bugensis

Photo credit: Lyndsey Manzo, Ohio Sea Grant & Stone Laboratory/Flickr

European rudd

Scardinius erythropthalmus

Photo credit: U.S. Geological Survey , U.S. Geological Survey, Bugwood.org

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Pennsylvania Fish & Boat Commission

Banned Aquatic Invasive Species

Species Profiles

View photos and profiles for each of the species listed in this category.

Common: Species found in at least 1/3 of Pennsylvania counties.

Uncommon: Species found in Pennsylvania, but not widespread (i.e., found in less than 1/3 of Pennsylvania counties.)

Not present: Species not yet found in Pennsylvania.

*Status column last updated in January 2019.