神奇的动物世界周丹鱼睡觉吗？多数鱼不会闭眼，所以很容易使人以为它们不睡觉。事实上，很多种鱼在白天或者经常地在夜晚进入类似睡眠的状态。有的浮在原处不动，有的卧于水底。有些种类的鱼甚至不怕麻烦地准备休想之所。隆头鱼往泥沙里钻，只能看到随它们的呼吸而一起一... Magical animal world dandan fish to sleep? Most fish do not close their eyes, so it’s easy to make people think they do not sleep. In fact, many species of fish enter a sleep-like state during the daytime or often at night. Some float in place, and some lying on the water. Some species of fish are not even bothering to prepare themselves for rest. Drilled fish into the mud in the sand, can only see with their breathing together ...