Round goby
Round goby

Neogobius melanostomus Photo credit: © Mauro Hilário/Flickr

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Pond water starwort
Pond water starwort

Callitriche stagnalis Photo credit: © per.aasen/Flickr

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Banded mysterysnail
Banded mysterysnail

Viviparus georgianus Photo credit: © Thomas Palmer/Flickr

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Five leaf akebia
Five leaf akebia

Akebia quinata Photo credit: © Woolbeding Gardens/Paul Gallivan

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High Priority Species

Species deemed as "High Priority" are defined as being

exotic, invasive species which are:

1. Found in Pennsylvania but are not yet widespread (occurring in less than 1/3 of Pennsylvania counties).

 2. Considered at least moderately invasive.

Species Profiles

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

Note: Species list updated in September 2021.