最近，动物园的水族馆请来了一位新居民。Every fish welcomes the newcomer. Why is he so popular? 这位新居民有什么奇妙的本领呢？1. Hi there! My name is Cleaner Fish. I'm new here. As you can see, I'm a beautiful small fish. I'm only five centimetres long. 我的嘴巴尖尖...