一看鱼的活动情况 健康的鱼活动比较灵活,常群游于水的中上层。生病的鱼通常离群独游或时游时停,有的尾巴翘出水面,急窜狂游;有的成群停滞水面,长期不下沉,或绕池狂游。 二看鱼的体色 健康的鱼体色鲜艳。生病的鱼体色暗 A look at the activities of fish Healthy fish activities more flexible, often swimming in the upper water. Sick fish usually outbound solitary tour or stop when traveling, and some raised their tail out of the water, anxious channeling mad swim; some hordes of stagnant water, long-term does not sink, or swimming around the pool. Second, look at the fish body color healthy fish body color bright. Sick fish dark color