挪威科学家正在研究如何吸引鲑鱼吃食的方法。养在网箱里的鲑鱼抢食饲料的时间很短,因为饲料会很快沉入箱底。如果网箱很大,有时鲑鱼还未发现投下的饲料,饲料就已沉入箱底。要使鲑有较多的机会获得饲料,在投入饲料前利用声响、灯光或其它方式“通知”它们是一种有效的方法。 Norwegian scientists are studying ways to attract salmon to eat. Salmon caught in cages have a very short feed because the feed sinks quickly into the bottom of the box. If the cages are large, sometimes the salmon has not found the dropped feed and the feed has sunk into the bottom of the box. For salmon to have more access to feed, it is an effective way to “sound” them by sound, light or other means before putting them into feed.