桥街墨头鱼(Garra qiaojiensis Wu et yao),属鲤科,野鲮亚科,墨头鱼属,主要分布在伊洛瓦底江水系的龙川江、大盈江,为偶见种小型鱼类,吸附于水底石头上,喜刮食岩石表面附着生物。桥街墨头鱼体延长,侧扁,尤以背鳍以后为显著,胸腹部平坦,...桥街墨头鱼(Garra qiaojiensis Wu et yao),属鲤科,野鲮亚科,墨头鱼属,主要分布在伊洛瓦底江水系的龙川江、大盈江,为偶见种小型鱼类,吸附于水底石头上,喜刮食岩石表面附着生物。桥街墨头鱼体延长,侧扁,尤以背鳍以后为显著,胸腹部平坦,背缘略呈弧形。头大,宽大于高,腹面扁平。吻端圆钝,略向上翘。鼻孔前方有一横向凹陷,鼻孔中间向前突出,形成吻突。锥形角质凸起分布在吻端、吻突及吻突下方的两侧,大小不一,以吻端和吻突为大。口大、下位,浅弧形,吻皮向腹面包围,盖住或不盖住上颌,表面具细小乳突,边缘呈流苏状。口吸盘宽大,几乎与该处头宽相等。展开更多
A new species of the subfamily Labeoninae, Garra nujiangensis Chen and Yang, sp. nov. is recognized from a secondary branch of Nujiang River （upper Salween） in Zhenkang county, Yunnan province, China. It can be dist...A new species of the subfamily Labeoninae, Garra nujiangensis Chen and Yang, sp. nov. is recognized from a secondary branch of Nujiang River （upper Salween） in Zhenkang county, Yunnan province, China. It can be distinguished from other beardless Garra species by the following combination of characters： 12 - 14 circumpedunele scales; 48 - 50 lateral- line scales; a pair of rudimentary rostral barbels present in little individuals; 8 - 9 branched dorsal-fin rays; 5 - 6 scales between dorsal-fin origin and lateral line and 3 - 4 scales between pelvic-fin origin and lateral line; caudal peduncle relatively stouter; length between snout tip to posterior margin of eye longer than body depth at anal fin origin; head length longer than body depth at dorsal fin origin; prepelvic length 50.0% - 53.7% of standard length; pre-anus length 58.9% - 63.9% of standard length; body width 16.7% - 19.6% of standard length; body depth at dorsal fin 19.2% - 22.6% of standard length. The present study also verified that the presence of tiny barbells is a juvenile character in some beardless Garra species, such as G. nujiangensis and G. alticorpora.展开更多
文摘桥街墨头鱼(Garra qiaojiensis Wu et yao),属鲤科,野鲮亚科,墨头鱼属,主要分布在伊洛瓦底江水系的龙川江、大盈江,为偶见种小型鱼类,吸附于水底石头上,喜刮食岩石表面附着生物。桥街墨头鱼体延长,侧扁,尤以背鳍以后为显著,胸腹部平坦,背缘略呈弧形。头大,宽大于高,腹面扁平。吻端圆钝,略向上翘。鼻孔前方有一横向凹陷,鼻孔中间向前突出,形成吻突。锥形角质凸起分布在吻端、吻突及吻突下方的两侧,大小不一,以吻端和吻突为大。口大、下位,浅弧形,吻皮向腹面包围,盖住或不盖住上颌,表面具细小乳突,边缘呈流苏状。口吸盘宽大,几乎与该处头宽相等。
文摘A new species of the subfamily Labeoninae, Garra nujiangensis Chen and Yang, sp. nov. is recognized from a secondary branch of Nujiang River （upper Salween） in Zhenkang county, Yunnan province, China. It can be distinguished from other beardless Garra species by the following combination of characters： 12 - 14 circumpedunele scales; 48 - 50 lateral- line scales; a pair of rudimentary rostral barbels present in little individuals; 8 - 9 branched dorsal-fin rays; 5 - 6 scales between dorsal-fin origin and lateral line and 3 - 4 scales between pelvic-fin origin and lateral line; caudal peduncle relatively stouter; length between snout tip to posterior margin of eye longer than body depth at anal fin origin; head length longer than body depth at dorsal fin origin; prepelvic length 50.0% - 53.7% of standard length; pre-anus length 58.9% - 63.9% of standard length; body width 16.7% - 19.6% of standard length; body depth at dorsal fin 19.2% - 22.6% of standard length. The present study also verified that the presence of tiny barbells is a juvenile character in some beardless Garra species, such as G. nujiangensis and G. alticorpora.
