OTHER NAMES: N/A
Latin Etymology: Pacifastacus (?) leniusculus (?)
Adult Signal Crayfish (Pacifastacus leniusculus) at Berkeley, California - August 2022
Featured Subspecies: ?
Weight: g/kg / Length: 6-20cm
UK STATUS NOT EVALUATED/ IUCN Red List: Least Concern
Originally found in the North-West united states, the Signal Crayfish has via aquaculture become a major invasive species around the world including in California, Japan and the UK. They are an omnivore that feeds on detritus and can frequently outcompete local species, as well as being a carrier of crayfish plague which is far more lethal in other crayfish species.
Related Species:
Order: Decapoda
Family: Astacidae
Genus: Pacifastus
SUBSPECIES: P. l. leniusculus, P. l. trowbridgii, P. l. klamathensis
- Sighting Locations -
Native in Oregon, Washington, Idaho, and Northern California, non-native in much of California
- CALIFORNIA 2022 TRIP: Seen at Berkeley
Further Notes: BirdForum Opus, IUCN Red List, RSPB, Wikipedia, Xeno-canto
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