既然海水鱼不能适应淡水,为什么像大马哈鱼等洄游鱼类在海水和淡水都能生存? 知乎 Template




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tomski既然海水鱼不能适应淡水,为什么像大马哈鱼等洄游鱼类在海水和淡水都能生存? 知乎 coloring