WRONG!

While the progeny of that pairing will hatch as gravel-borne wild fish, the story does NOT end there.

Those wild-borne hybrids co-mingle with truly wild fish.... competing for territory and sustenance, consuming resources within a riverine rearing habitat limited by a fixed carrying capacity. But because of their crappy genes, they fail to make it thru the relentless selection pressures presented at each life stage (fry/smolt/marine subadult/returning spawner), and few if any actually survive to reproductive adulthood.... in most cases, that number is statistically indistinguishable from ZERO!

The hatchery lineage is a genetic dead end unto itself. Allowing it to pollute the population of wild fish thru stray H x W pairings effectively squelches the reproductive potential of the wild fish in the pair. Collectively, the overall effect for the entire escapement is diminished adult recruitment from that brood year. The greater the hatchery stray rate onto the spawning grounds, the greater the reproductive loss.

Hence my crusade that ALL hatchery fish MUST die!