水的颜色的不同,可以反映出水中浮游生物的种类及数量的多少。由此可判断出水的肥瘦情况及是否有利于鱼类的生长,以便采取相应的措施来保障水质,一般来说,单根据水的颜色可以将水质大致分为以下几类:一、瘦水此种水水质清淡,水呈浅绿色,水中往往含浮游生物较少,常长一些丝状藻类(对鱼苗、鱼种不利)和水生维管束植物。二、含浮游植物较多但不好的水 The color of the water can reflect the type and amount of plankton in the water. This can determine the water lean situation and whether it is conducive to the growth of fish in order to take appropriate measures to protect the water quality, in general, based on the color of water can be roughly divided into the following categories: First, the thin water Light water quality of light, light green water, the water often contains less plankton, often grow some filamentous algae (on fry, fish species disadvantage) and aquatic vascular plant. Second, with phytoplankton more but not good water