苏格兰是个盛产鲑鱼的地方。这种鱼在苏格兰内河渔业中占有重要的地位。鲑鱼是欧洲两大洄游鱼类之一,它生长在大西洋、北海和波罗的海沿岸。可是在冬季几个月它却要逆流而上,到氧气丰富与水流急速的鳟鱼区中产卵。在交尾和产卵后大鱼又返回海中;小鱼就在第一年夏季或至迟在第二年夏季也随着回到海中,一直到产卵期。多年的 Scotland is a salmon-rich area. This fish plays an important role in inland river fisheries in Scotland. Salmon, one of the two migratory fish species in Europe, grows on the Atlantic, North Sea and Baltic coasts. However, in the winter a few months it has to go counter-current to spawn in oxygen-rich and fast-moving trout areas. The fish returned to the sea after mating and spawning; the fish returned to the sea in the first summer or later than the second summer, until the spawning period. many years