Specimen Information

Faxonius obscurus
Faxonius obscurus
(Allegheny crayfish)
Crustaceans-Crayfish
Native Transplant
Collection Info
Point Map
Species Profile
Animated Map

Specimen ID1757549
GroupCrustaceans-Crayfish
GenusFaxonius
Speciesobscurus
Common NameAllegheny crayfish
StatePA
CountyWayne
LocalityBelmont Lake, at boat launch.
Mapping AccuracyAccurate
HUC8 NameLackawaxen
HUC8 Number02040103
HUC10 NameWest Branch Lackawaxen River
HUC10 Number0204010301
HUC12 NameBelmont Lake-West Branch Lackawaxen River
HUC12 Number020401030103
Map
Collection Day15
Collection Month8
Collection Year2023
Year AccuracyActual
Potential Pathwaydispersed | released aquarium
CommentsFound during Pennsylvania Fish and Boat Commission surveys for aquatic invasive species. ID by PFBC AIS Coordinator Sean Hartzell. Multiple size classes suggest an established population. Many other crayfish were observed but missed due to murky water (sampled during rain event).
Record TypeNAS sighting report
VerifierSean Hartzell (Pennsylvania Fish and Boat Commission)
Freshwater/MarineFreshwater
Number Collected4
Photo
Faxonius obscurus
Faxonius obscurus

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The data represented on this site vary in accuracy, scale, completeness, extent of coverage and origin. It is the user's responsibility to use these data consistent with their intended purpose and within stated limitations. We highly recommend reviewing metadata files prior to interpreting these data.

Citation information: U.S. Geological Survey. [2025]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [12/6/2025].

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