The mountain whitefish, which is a native species to Montana, have been found dead on the river’s east and west banks.
The first workshop will be held Sept. 20-21 in Missoula.
Wildlife officials from a government-sponsored pallid sturgeon recovery group dismissed the project’s alleged benefits for the fish as “unfounded” and “purely theoretical.”
13 sheep were killed at a ranch last week, but wildlife officials were unable to trap the bears.
Ranchers fear wildlife such as elk and bison will spread brucellosis to their livestock.
The 2016 Montana crop may be only the third harvest in a decade to be valued at less than $1 billion.
Bison can compete with livestock for grazing space and many carry brucellosis, a disease that can cause cattle to abort.