Wednesday April 15, 2026
WDFW —
Washington Department of Fish and Wildlife (WDFW) has undertaken emergency rule making to classify golden mussels (Limnoperna fortunei) as a Prohibited Level 1 invasive species statewide in response to the imminent threat of introduction and spread to Washington’s waters.
As a Prohibited Level 1 species, live golden mussels may not be possessed or retained, introduced on or into a water body or property, or trafficked (transported, bought, or sold) without Department authorization, a permit, or as otherwise provided by rule.