鸭嘴金线鲃又名鸭嘴金线魮(学名:Sinocyclocheilus anatirostris,俗名鸭嘴鱼)为辐鳍鱼纲鲤形目鲤科金线鲃属的其中一种鱼类,被IUCN列为次级保育类动物,分布于亚洲中国广西壮族自治区乐业县地下河流域。本鱼体延长且侧扁,头部扁平呈鸭嘴状,头背交界处隆鳍并向前突出,无眼,口亚下位,具触须2对,体裸露无鳞,侧线明显,背鳍软条11枚、臀鳍软条8枚,体长可达12.9公分,尾鳍叉形,胸鳍向后延伸至腹鳍起点,鱼鳍透明,体色乳白色略带粉红,无斑纹,该物种的模式产地在广西凌云、乐业两地溶洞内。[1],栖息在地下河底中层水域,生活习性不明。
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