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Alligatorweed
(Alternanthera philoxeroides)
Found an invasive species? Register for a free login account, or submit a public report.
Red shiner
Cyprinella lutrensis Photo credit: © FISHBIO
Bighead carp
Hypophthalmichthys nobilis Photo credit: U.S. Geological Survey , U.S. Geological Survey, Bugwood.org
Eurasian ruffe
Gymnocephalus cernuus Photo credit: © Alan Butterworth/Flickr
Rainbow smelt
Osmerus mordax Photo credit: © Neponset River Watershed Association
Fish
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.
Note: Species list last updated in September 2021.
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