青苔是一种丝状绿藻,常见于鱼苗池中。青苔的繁殖速度很快,于春季水温回升后在鱼池浅水处或岸边开始萌发,长成绿色细丝矗立水中,形如棉絮团状乱丝,大量繁殖时很难根除,能使池水急剧变瘦,一旦幼鱼游入其中,往往被缠住而致死。一些冬水田也有生长。 Moss is a filamentous green algae, common in fry ponds. Moss breeding very quickly, after the spring water temperature rise in the pond shallow water or shore began to germinate, grow into green filaments stand in the water, shaped like cotton floss group disorder, difficult to eradicate in large numbers of breeding, can make the water rapidly changing Skinny, once the juvenile swimming into them, are often entangled and lethal. Some winter paddy fields also grow.