Story perspectives
Invasive Mitten Crab Discovered Again in Willamette River
12/7/2025
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Story summary
- A Chinese mitten crab was captured in the Willamette River near Portland in mid-November 2025.
- This marked Oregon's second mitten crab sighting this year.
- The crab threatens flood control and native species by preying on fish eggs and competing for food.
- Oregon Department of Fish & Wildlife (ODFW) is coordinating with organizations to investigate further mitten crabs in the Willamette River.
- Residents are urged to report any mitten crab sightings.
