荷马条鳅属(Homatula)鱼类隶属于条鳅科（Nemacheilidae），是中国特有鱼类，广泛分布于长江、珠江、红河、澜沧江-湄公河、怒江-萨尔温江及渭河-黄河水系，是理想的研究青藏高原隆升背景下水系演化历史的类群。同域分布物种的体型巨大差异及不同分布水系物种的鳞片差异有利于研究物种对栖息地的形态适应变化。目前，对该属的研究，手段单一，且相互独立，缺少对形态学、分子生物学及生态学信息的综合分析；欠缺系统全面的系统发育研究，及对生物地理的探讨；分类系统陈旧，不能反映系统发育关系，在实际形态分类中缺少可操作性。本项目将采用“total evidence”方法综合形态学、分子生物学及生态学信息来构建该属的系统发育关系，重建其进化历史，了解物种分化机制以及性状演化过程，探讨青藏高原抬升引起现代水系形成过程，构建能反映系统发育关系的分类系统。

Homatula is a group of stream loaches endemic in China. The species in this genus widely distributed in Yangtze, Pearl, Red,Lancang-Mekong, Nu-Salween and Wei-Yellow river drainages, which represented an ideal objective to study the historical forming process of morden drainages under the background of uplift of the Qinghai-Tibet plateau. Diversity of body shape in sympatric species and degrees of scales in isolated species can be jointed to study the morpholgical adaptation of fishes under different habitats stress. Nevertheless,previous researches of this genus mostly based on single approach, relative separated methord, made its systematic phylogenetic and biogeographic studies absent. Furthermore, the old key now used for identification can not reflect the phylogenetic relationships or actually distinguish species anymore.This study aimed to reconstruct the phylogenetic relationships of Homatula based on "total evidence"approach (combined morphology,molecular and ecology informations).It can help to study the evolution history of this genus,understand the charactor evolution and speciation mechanism, infer historical biogeography, and establish a feasible identification key which can reflect the phylogenetic relationships.