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Paired releases of Carlin tagged fish were carried out in the river Kokemaenjoki, Bothnian Sea, in 1991-1993, to compare the survival and migration of Atlantic salmon (Salmo salarL.) smolts released at two different sites, off the estuary and at Nakkila, 55km upstream. The eight different smolt groups, divided between the two sites, ranged in mean weight from 27g (1yr) to 260g (2yr). The size of the...
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