食鱼性鱼类是指鱼类群落中以鱼类为食的鱼类，它们处于较高的营养级，是水生态系统中主要的顶级消费者。食鱼性鱼类渔业是北美湖泊渔业的主要方式，已形成了比较完善的理论与方法。一些研究表明，食鱼性鱼类的放养通过营养串联效应（Trophiccascadingeffect）有改善湖泊水质的 Fish-eating fish refers to fish-eating fish stocks, which are at a higher trophic level and are major top-tier consumers in aquatic ecosystems. Fish-eating fish fisheries are the main form of lake fisheries in North America and have formed relatively complete theories and methods. Some studies show that stocking of fish-eating fish improves lake water quality through the Trophic cascadingeffect