天气预报 > 其他 > 鱼是靠什么来保持身体平衡的
鱼是靠什么来保持身体平衡的
更新时间: 2020-09-22 00:00:00  

鳍的作用:

1、背鳍:保持鱼体侧立。若失去,会失去平衡而侧翻。

2、胸鳍和腹鳍:平衡。若失去,鱼体会左右摇摆不定。

3、尾鳍:决定运动方向。若失去,则不能控制游动方向。

4、臀鳍:协调其它各鳍,起平衡作用。若失去,身体轻微摇晃,对鱼体平衡起着关键作用。

关键词: 什么 保持 身体 平衡

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