Seven native mussels in state act as natural water filters.
Game and Fish found suspect moss in pet stores in Cheyenne, Rock Springs, Sheridan, Gillette and Casper. Officials hope to contain the threat by alerting aquarium owners to take careful action.
The zebra and quagga mussels have been found in neighboring states and once established are impossible to eradicate
Rangers increase inspections to prevent arrival of devastating aquatic invasive species.