四、水质管理池水的水色、溶氧、PH值、温度、氨氮等因子直接影响鱼的生存与生长发育，这是日常管理工作的中心环节。1．实践证明，清澈见底的池水对饲养长吻不利。长吻本性畏光。在这种水环境里没有安全感，它们将不停地、交替地由表层向底层钻，造成体表划伤（该鱼的胸鳍棘、 Fourth, water quality management Pool water color, dissolved oxygen, PH value, temperature, ammonia nitrogen and other factors directly affect the survival and growth of fish, which is the daily management of the central link. 1. Practice has proved that crystal clear water on the feed long kiss negative. Long kiss nature photophobia. In this water environment there is no sense of security, they will continue to alternately drill from the surface to the bottom, causing surface scratches (the pectoral spines of the fish,