澜沧江短吻鱼属鱼类  

FISHES OF GENUS Sikukia (TELEOSTEI,CYPRINIFORMES, CYPRINIDAE) IN LANCANGJIANG RIVER SYSTEM (Cypriniformes:Cyprinidae)

作　　者：李再云[1] 陈银瑞[1] 杨君兴[1] 陈小勇[1] 

机构地区：[1]中国科学院昆明动物研究所

出　　处：《Zoological Research》1998年第6期453-457,共5页动物学研究（英文）

基　　金：中国科学院重大项目资助课题

摘　　要：短吻鱼属Ｓｉｋｕｋｉａ隶属于鲤科亚科（Ｃｙｐｒｉｎｉｄａｅ：Ｂａｒｂｉｎａｅ），分布于澜沧江－湄公河流域。已知本属鱼类有４种，仅分布于中国西南部澜沧江下游的有Ｓｆｌａｖｉｃａｕｄａｔａ和Ｓｌｏｎｇｉｂａｒｂａｔａ；Ｓｓｔｅｊｎｅｇｅｒｉ只见于泰国湄公河；Ｓｇｕｄｇｅｒｉ为中国和泰国共有种。长须短吻鱼，新种Ｓｌｏｎｇｉｂａｒｂａｔａｓｐ．ｎｏｖ．主要鉴别特征为：具须２对，吻须伸达眼中央正下方，口角须伸达眼眶后缘下方；鳃耙１０～１２；背鳍、尾鳍具黑色边缘。Fishes of the genus Sikukia (Cyprinidae:Barbinae) can be distinguished from other fishes of Barbinae in several characters, such as snout shorter, eyes bigger, adipose eyelid absent etc. So far three species have been recorded. We report a new species S longibarbata in this paper, so there are totally four species now. All of them can be found in Lancangjiang river, Yunnan. Sikukia longibarbata sp. nov. Holotype:KIZ 9606078,standard length 62mm;Menglun,Xishuangbanna,Lancanji ang river system,June,1996. Paratypes:7 specimens,KIZ 9606074,9606085,9606090,9606079-082,standard length 52-76mm,collecting localities and dae same as Holotype. D.3-8;A.3-5;P.1-14-15;V.1-9.Lateral line.30-33;predorsal scales 11-12;circumpeduncule scales 14;gill rakers 10-12;pharyngeal teeth 3 rows. Depth 2 7-3 6,head 3 7-4 4,length of caudal peduncle 3 7-4 4,depth of caudal peduncle 7 4-8 9 in standard length;snout 3 2-4 0,eyes 3 2-4 0,interorbital width 2 5-2 9 in head length;depth of caudal peduncle 1 3-1 5 in its length. The first species of the genus Sikukia,S gudgeri without barbels occurs only in Thailand. The remaining 3 species including the two species with developed barbels are distributed in lower reach of Lancangjiang, South western Yunnan.

关 键 词：澜沧江 短吻鱼属 新种 

分 类 号：Q959.468[生物学—动物学]