雅思口语素材：水生动物-大刺鳅（三）
<p> 中文名：大刺鳅</p><p> 英文名：<span word="Tire">Tire</span> <span word="Track">Track</span> <span word="Eel">Eel</span></p><p> 拉丁名：<span word="Mastacembelus">Mastacembelus</span> <span word="armatus">armatus</span></p><p> <span word="Both">Both</span> <span word="the">the</span> <span word="dorsal">dorsal</span> <span word="and">and</span> <span word="anal">anal</span> <span word="fins">fins</span> <span word="are">are</span> <span word="extended">extended</span> <span word="and">and</span> <span word="joined">joined</span> <span word="to">to</span> <span word="the">the</span> <span word="caudal">caudal</span> <span word="fin">fin</span>. <span word="Along">Along</span> <span word="the">the</span> <span word="entire">entire</span> <span word="length">length</span> <span word="of">of</span> <span word="its">its</span> <span word="body">body</span>, <span word="reaching">reaching</span> <span word="vertically">vertically</span> <span word="from">from</span> <span word="its">its</span> <span word="back">back</span> <span word="to">to</span> <span word="its">its</span> <span word="belly">belly</span>, <span word="it">it</span> <span word="is">is</span> <span word="patterned">patterned</span> <span word="with">with</span> <span word="a">a</span> <span word="series">series</span> <span word="of">of</span> <span word="irregular">irregular</span> <span word="dark">dark</span> <span word="markings">markings</span>. <span word="These">These</span> <span word="markings">markings</span> <span word="have">have</span> <span word="a">a</span> <span word="tire">tire</span> <span word="track">track</span> <span word="appearance">appearance</span> <span word="which">which</span> <span word="has">has</span> <span word="been">been</span> <span word="used">used</span> <span word="as">as</span> <span word="a">a</span> <span word="common">common</span> <span word="name">name</span> <span word="for">for</span> <span word="this">this</span> <span word="fish">fish</span>.</p><p> 答案：</p><p> 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。</p><p> 补充知识：</p><p> 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。</p><p> 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0.5<span word="kg">kg</span>。肉细嫩，味佳，群众喜食。分布于长江以南的各水系。</p><p> </p>
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