水是众生之母,也是惟一的液体,在固态(冰冻)比液态的体积还大10%,也就是说水是不能浓缩的。鱼是“脊椎动物”之母,从演化的角度来看“人”也只是生活在陆地上带肉鳍的四脚鱼之一。“如鱼得水”就是说鱼在水里该是活得痛快,但是有许多热带鱼却不守本分,老往水外跑。这又是怎么回事?笔者是鱼类学家,将陆续把 Water is the mother of all sentient beings and is the only fluid that is 10% larger in volume in the solid state (frozen) than in the liquid state, that is, water is not concentrated. Fish is the mother of “vertebrates.” From an evolutionary point of view, “people” is only one of the four-footed fish with fins living on land. “Like a duck” This means that the fish in the water is to live a happy life, but many tropical fish do not keep this part, running out of water. This is how the matter? The author is a fish scientist, will be put one after another