近期，中国科学院昆明动物所研究所生态系统与地理学研究组科研人员在整理采自于云南李仙江流域华吸鳅鱼类标本时发现，该区域存在4个迥然不同的物种，它们在口部结构、体色、侧线鳞数目、鳍条数目等方面差别极大，经过与我国及越南红河水系已报道过的华吸鳅物种详尽对比之后，科研人员确定，其中有两个为新种――分别命名为李仙江华吸鳅（Sinogastromyzon lixianjiangensis）和大口华吸鳅（Sinogastromyzon macrostoma）, 一个为新纪录种――多斑华吸鳅（Sinogastromyzon multiocellum）, 和已记录过的越南华吸鳅（Sinogastromyzon tonkinensis）。
这一发现使已记录分布于我国的华吸鳅物种增加到13个，进一步提高了对于华吸鳅属鱼类多样性和分布格局的认识。
华吸鳅属（Sinogastromyzon）隶属于鲤形目（CYPRINIFORMES）、爬鳅科（Balitoridae）、爬鳅亚科（Balitorinae），在本研究之前，共记录有有效种19个，分布于中国西南的长江上游、珠江上游、李仙江、元江、中国台湾各水系，越南北部山区的红河和马江水系。
该研究成果已经在国际知名的鱼类学杂志Environmental Biology of Fishes上发表。
多斑华吸鳅（Sinogastromyzon multiocellum）
大口华吸鳅（Sinogastromyzon macrostoma）
李仙江华吸鳅（Sinogastromyzon lixianjiangensis）
越南华吸鳅（Sinogastromyzon tonkinensis）
推荐原始出处：
Environmental Biology of Fishes>DOI:10.1007/s10641-009-9554-8
Two new species and a new record of the genus Sinogastromyzon (Teleostei: Balitoridae) from Yunnan, China
Shu-Wei Liu1, 2, Xiao-Yong Chen1> and Jun-Xing Yang1
Abstract> Two new species and a new record of Sinogastromyzon are described from Lixianjiang River of Yunnan province, China. Sinogastromyzon lixianjiangensis, new species, can be distinguished from its congeners by the following characters: pectoral fin with XIII–XIV, 15–17 rays; pelvic fin with X–XI, 10–12 rays; 60–65 lateral-line scales; no scales on the dorsum of paired fins or the region between axilla of pectoral fin and pelvic-fin origin; tip of pelvic fin close to anus; tip of anal fin close to caudal-fin base; anal-fin origin nearer to the caudal-fin base than to the posterior pelvic-fin base; anus nearer to anal-fin origin than to the posterior pelvic-fin base; dorsal side of the body with 9–11 black blotches. Sinogastromyzon macrostoma, new species can be distinguished from its congeners by the following characters: pectoral fin with XII–XIV, 12–15 rays; pelvic fin with VII–IX, 11–13 rays; 48–56 lateral-line scales; mouth extremely big, slightly arched; no scales on the dorsum of paired fins or the region between axilla of pectoral fin and pelvic-fin origin; tip of pelvic fin far beyond anus; tip of anal fin far from caudal-fin base; anal-fin origin about midway between the posterior pelvic-fin base and caudal-fin base; anus nearer to posterior pelvic-fin base than to anal-fin origin; dorsal side of the body uniformly gray, without regular blotches in formalin preserved specimen. Sinogastromyzon cf. multiocellum is firstly recorded in China.
