Fish live in water and most fish breathe through their gills. 鱼生活在水中，大多数的鱼靠鳃呼吸。

　　They have fins, scales, eyes and a mouth. 它们有鳍、鳞、眼睛和嘴巴。

　　They have a body part for hearing. 它们有接收声音的部位。

　　It is called the lateral line. 这个部位叫做侧线。

　　It hears sounds in the water. 它能在水中听到声音。

　　Do you know that there are more than 40 kinds of flying fish in the world? 你知道世界上有40多种飞鱼吗？

　　They can fly about 10 to 12 feet in the air. 它们能飞到约10-12英尺（约3-3.7米）高。

　　And they usually have larger fins. 它们的鱼鳍通常都更大。