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Do you know angelfish? They are one of the most brightly colored fishes in the sea, and people like to keep them as pets because of their elaborate patterns on their bodies. But perhaps the most interesting thing about angelfish is that there is a kind of angelfish, Bellus Angelfish, which can change from female to male!
你知道神仙魚嗎？它們是海洋中顏色最鮮艷的魚之一，人們喜歡把它們當寵物養，因為它們身上有精致的圖案。但是，可能關于神仙魚最有趣的事情就是，存在一種名為土耳其仙的神仙魚，這種魚可以從雌性變成雄性！
The change happens for a specific reason. Bellus Angelfish live in groups, and each group has one blue male fish and a number of yellow female fish. The male fish is the strongest and largest member of the group. He protects and looks after the females. When the male angelfish dies, the group needs a new protector. This is when the largest female angelfish in the group begins to change her appearance. She begins to grow bigger and, after a week, starts to change color-from yellow to blue. Her behavior changes accordingly and becomes more male-like. Finally, about two weeks later, she becomes completely male!
這種變化是有特定原因的。神仙魚成群生活，每個群體中會有一條藍色的雄性魚和許多黃色的雌性魚。雄魚是群體中最強壯和最大的成員。他保護并照顧雌性。當雄性神仙魚死了，這個群體需要一個新的保護者。這時，群體中最大的雌性雄性魚開始改變外觀。她開始變大，一周后，開始從黃色變為藍色。她的行為也隨之改變，變得更像雄性。最后，大約兩周后，她變成了完全的雄性！
