News Ecosystems

Too much intermingling puts native trout in trouble

Mixing with introduced rainbow trout could reduce offspring for the troubled westslope cutthroat

By Susan Milius

- More than 2 years ago

Even a little hybridization may hurt native cutthroat trout, suggests an unusual study of wild fish genetics.

FIRST GENERATION The U.S. Geological Survey’s Clint Muhlfeld holds a trout from Langford Creek, Mont., that had one rainbow and one westslope cutthroat as parents.