魚類學名詞

名詞 定義 vertical migration The upward and downward movement of organisms in a lake or the ocean. Movement is usually into surface waters at night to feed and into deeper waters to avoid predators during the day. 垂直性洄游 在湖或海洋中的生物朝上與朝下的運動。遷移通常是，在晚上進入水表層覓食而在白天進入較深的水域避開掠食者。