Teedub, just google up the science.

No, it doesn't change the DNA, it changes its phenotypic behavior.

If you really won't drive 1000 miles without being able to bonk a fish from the Sol Duc, then there are plenty of streams in your area to bonk fish. There are also plenty of streams on the OP with hatchery fish that are open right now. Have at it.

Fish on...

Todd