Invasive zebra mussels found another avenue for potential infestation of Montana waters. Montana, Fish, Wildlife & Parks was notified Wednesday that zebra mussels were detected in aquarium moss balls sold at a pet store in Washington state. FWP immediately checked pet stores around Montana and found invasive mussels in moss balls at multiple locations.  

It appears these moss balls were imported from the Ukraine to a distributor in California and were shipped to pet stores nationwide. The facility that imports the moss balls has been quarantined and all shipments of moss balls h...