雅思口语素材：水生动物-大刺鳅（三）

　　中文名：大刺鳅

　　英文名：Tire Track Eel

　　拉丁名：Mastacembelus armatus

　　Both the dorsal and anal fins are extended and joined to the caudal fin. Along the entire length of its body, reaching vertically from its back to its belly, it is patterned with a series of irregular dark markings. These markings have a tire track appearance which has been used as a common name for this fish.

　　答案：

　　大刺鳅的背鳍、腹鳍延伸并同臀鳍连为一个整体，从身体的背部至腹部，体表具有一系列的竖的暗色的不规则的斑纹横贯整个身体，这些斑纹的外形像轮胎的印记，这也是它的英文名的由来。

　　补充知识：

　　体细长，稍侧扁，尾部甚扁薄。吻极尖，前端有1尖长的吻突。口裂浅。具细齿。有眼下刺。体鳞甚细。背鳍基长，前部由35枚左右游离短棘组成;臀鳍具棘2枚，且连尾鳍;胸鳍短圆;无腹鳍。体侧有多数块状网纹或纵波纹。

　　栖息在砂石底的江河溪流，常藏匿于石缝洞穴，以小型无脊椎动物和部分植物为食。体重可达0.5kg。肉细嫩，味佳，群众喜食。分布于长江以南的各水系。