HELENA – Montana Fish, Wildlife, and Parks and Trout Unlimited are offering a reward of up to $35,250 for information on illegally introduced fish in Swan Lake.
According to a Facebook post from FWP’s Region 6 Office, two walleye were found in Swan Lake in October 2015.
The two walleye were caught in a gill net. FWP says it was the first time walleye were discovered in Swan Lake.
FWP biologists used chemical analysis from the fishes’ inner ear bones to trace to trace their origin. They compared their findings to walleye from more than dozen other popular Montana fisheries.