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Are sea trout inclined to stray?

Although they can wander from river to river, their homing ability in terms of successful spawning appears to be very good.  The evidence for this suggestion is based on tag recapture patterns and genetic discreteness of different spawning stocks. However, some straying must occur as it was wandering sea trout during the retreat of the last Ice Age, ten to fourteen thousand years ago, that founded nearly all of the trout populations that we see in our rivers and lakes today.  Also, sea trout have spread and are now established in nearly every stream in Patagonia and the Falkland Islands after limited stocking.