Now that Colorado’s zebra mussel problem has been confirmed in the Colorado River, the strategy for fighting the invasion has started to shift. Colorado Parks and Wildlife said it won’t try chemical treatments on the river as they’ve done in the past with Highline Lake, one of the first spots CPW found the mussels. It believes the risks that could bring to native fish, along with the sheer scale of the waterway make that impossible. Instead, the focus now is on containing the spread and keeping mussels out of other lakes and reservoirs.

Other invasive species news:

• KKCO (Grand Junction, Colo.): The latest on zebra mussels
• California Department of Fish and Wildlife: News release: CDFW awards $2.5 million for golden mussel response and boating access projects​