1.肉食性鱼类一般而言,肉食性鱼类肉质较佳,经济价值也较高。在同一口鱼塘中适当套养一些肉食性鱼类,如鳜鱼、乌鳢(黑鱼)、加州鲈鱼、鲇鱼等,有益无害。利用这些鱼类,既可以清除池塘里经济价值低的小型野杂鱼类,将它们转化为优质水产品,又可为放养的鱼类减少争食、争氧对象,从而提高养殖鱼类 1. Carnivorous fish In general, carnivorous fish are better fleshed and of higher economic value. Some carnivorous fish, such as anchovy, jackal (blackfish), California perch, anchovy, etc., are properly nested in the same pond. The use of these fish can not only remove small wild boar with low economic value in the ponds, turn them into high-quality aquatic products, but also reduce competition and oxygenation for stocked fish so as to raise their breeding fish