白首不离相濡以沫
        
            [bái shŏu bù lí xiāng rú yĭ mò]
        
        
            This is a romantic phrase implying lifelong loyalty. It comes from Chinese culture and classical Chinese literature, meaning to live together in harmony till they become white-haired without ever leaving each other, just like the two fish surviving by being moistened with moisture rather than water.