1Rue des Rauraques 6, 2800 Delmont, Switzerland (permanent address); and Lee Kong Chian Natural History Museum, National University of Singapore, 2 Conservatory Drive, Singapore 117377. .
Zootaxa. 2022 Apr 26;5129(1):92-104. doi: 10.11646/zootaxa.5129.1.5.
Nemacheilus pezidion, new species, is described from the Xe Kong watershed, Mekong drainage, in Attapeu province, southern Laos. It is distinguished from all other Nemacheilidae in Southeast Asia by its unique colour pattern consisting of a black midlateral stripe and a middorsal row of 1115 narrow saddles. Besides, the male has a globulous suborbital flap with tubercles along its posterior edge, and the pectoral fin with thickened anterior rays, and branched rays 14 and unculiferous pads behind them covered by small tubercles. It was found in habitats with moderate flow, on mud to gravel bottom. Nemacheilus pezidion was earlier misidentified as N. longistriatus.
湄公河流域老挝南部阿速坡省色孔河流域的新物种湄公拟腹吸鳅被描述。它与东南亚所有其他拟腹吸鳅科鱼类的区别在于其独特的颜色模式，由一条黑色的侧中线和一条背部的 11-15 条狭窄的鞍形斑纹组成。此外，雄鱼具有球形的眶下瓣，后缘有结节，胸鳍的前鳍条变厚，分支鳍条 14 和无鳍刺的鳍垫后面覆盖有小结节。它生活在中等水流的泥底或砾石底的生境中。湄公拟腹吸鳅以前被错误地鉴定为长纹拟腹吸鳅。
