Just give up the argument, you are not going to win this one. The guys are trying to educate you, not argue but if you won't listen to what they are telling you and decide to trust Wiki instead (not Genesse specifica data, just a general fact about salmon). The salmon in the Genny are put there as babies and that is how the river is imprinted into them as their place of birth. You have the general idea about Salmon reproduction correct but around here fishing is BIG BIG business so the government has to help the fish along so the money keeps rolling in.