Invasive Zebra Mussels Found In Pet Stores In 21 States, Including Northwest: ‘This Was Not A Pathway We’d Been Aware Of Until Now’

A citizen’s report of an invasive zebra mussel found in an aquarium moss package found in a pet store prompted a U.S. Geological Survey expert on invasive aquatic species to trigger nationwide alerts last week that have led to the discovery of the destructive shellfish in pet stores in at least 21 states from Alaska and the Northwest to Florida.