A morphologically variant natural population of cyprinids without dorsal fin possibly derived from Mystacoleucus marginatus (Osteichthyes: Teleostes) from the Lancang Jiang River, Yunnan, China

In July 2001, 15 grotesque cyprinid specimens were collected in the Lancangjiang River (of the upper reaches of the Mekong River) in Menglun Town, Xishuanbanna Prefecture, Yunnan Province, PR China. These specimens are characterized by surprising characte

云南青jiang鱼类的分类和分布(jiang形目:青jiang科)

记录了采自云南的青jiang属1新亚种及1新纪录种。中华青jiang, 新亚种O. latipes sinensis subsp. nov.与日本青jiang指名亚种O. latipes的主要区别: 新亚种第一肋骨连接第二脊椎骨上, 平均脊椎数为29.2±0.6, 胸鳍条多数为9, 染色体为2n=46。小青jiangO. minutillus新纪录种, 分布于西双版纳。还报导了青jiang属的地理分布, 介绍了属的特征。新种模式标本存中国科学院昆明动物研究所鱼类标本室。图3表2参5