The discovery of New Zealand mudsnails has shut down the state of Montana’s third largest hatchery, a trout production facility near Bridger. The discovery was at a hatchery located in the Missouri River drainage of Montana.

The discovery of New Zealand mudsnails has shut down the state of Montana’s third largest hatchery, a trout production facility near Bridger. The discovery was at a hatchery located in the Missouri River drainage of Montana.