在养殖过程中，水色及其变化是判断水质好坏的重要指标。可根据透明度判断水体的肥瘦。根据水色判断的浮游生物的种类等，从而采取相应用药与施肥措施来管理水质。随着养殖密度的提高，水质趋于恶化，养殖对象发病率增高，病情越来越复杂。一旦发病就会造成一定的损失，养殖者 Aquaculture and its changes in the breeding process is to determine the quality of water is an important indicator. According to the transparency of water body fat and thin. According to the color of the plankton to determine the species, etc., so as to take the appropriate medication and fertilization measures to manage water quality. With the increase of breeding density, water quality tends to deteriorate, the incidence of breeding objects increased, the condition is more complex. Once the disease will cause some loss, farmers