A new blind loach species,Triplophysa huanjiangensis(Teleostei:Balitoridae),from Guangxi,China  

中国广西盲鳅一新种——环江高原鳅(英文)

作　　者：杨剑[1] 吴铁军[2] 蓝家湖 

机构地区：[1]广西师范学院化学与生命科学学院,广西南宁530001 [2]广西水产研究所,广西南宁530021 [3]广西都安水产技术推广站,广西都安530700

出　　处：《Zoological Research》2011年第5期566-571,共6页动物学研究（英文）

基　　金：supported by Systematic and Conservation Studies on Cave Fishes in Guangxi(2060302)

摘　　要：A new blind loach of the genus Triplophysa was collected in 2007 from a cave in Leyi village,located near Chuanshan Town,Huangjiang County in the Guangxi Zhuang Autonomous Region of southern China.The new species,Triplophysa huangjiangensis sp.nov,can be distinguished from its congeners by eyes and scales absent;caudalfin forked;adipose keel present;lips with furrows;distal margin of dorsal-fin truncate,dorsal fin origin much closer to caudal-fin base than snout tip;8-9 branched dorsal-fin rays;6-7 branched pelvic-fin rays;6 branched anal-fin rays;10-11 branched pectoral-fin rays;13-14 branched caudal-fin rays;pectoral-fin length 52.3%-70.7% the distance between pectoral-fin origin to pelvic-fin origin;dorsal-fin origin posterior to vertical line of pelvic-fin origin;outer rostral barbel longer than other two pairs of barbels,with 47.0%-73.8% of lateral head length;anterior nostril with elongate barbel-like tip;and posterior chamber of gas-bladder developed,reaching pelvic-fin origin.2007年4月,在广西壮族自治区环江县川山镇乐衣村附近一洞穴采集到一批盲鳅类标本。经鉴定,为高原鳅属（Triplophysa）鱼类一新种,被命名为环江高原鳅（Triplophysa huangjiangensis）。该新种以以下组合特征与高原鳅属的其他已知种类相区别：无眼;通体无鳞;尾鳍分叉;尾柄上、下叶具发达的软鳍褶;背鳍后缘平截;背鳍起点距尾鳍基的距离短于距吻端的距离;背鳍分枝鳍条数为8~9;胸鳍分枝鳍条数为10~11;腹鳍分枝鳍条数为6~7;臀鳍分枝鳍条数为6;尾鳍分枝数为13~14;胸鳍长为胸鳍起点至腹鳍起点间距的52.3%~70.7%;腹鳍起点位于背鳍起点之前下方;外侧吻须最长,为侧面头长的47.0%~73.8%;前鼻孔位于一短管中,末端延长呈须状;鳔后室发达,末端可伸达腹鳍起点。

关 键 词：New species Blind fish BALITORIDAE TRIPLOPHYSA GUANGXI 

分 类 号：Q959.4[生物学—动物学]