Zhuo-Ni Chen, Shi-Xiong Leng, Chun-Sheng Yang, Xian-Wu Tang, Bin Qiu, Tong-Xiang Zou
{"title":"A New Freshwater Fish Species of the Genus <i>Oreonectes</i> (Teleostei: Cypriniformes: Nemacheilidae) From Guangxi, China.","authors":"Zhuo-Ni Chen, Shi-Xiong Leng, Chun-Sheng Yang, Xian-Wu Tang, Bin Qiu, Tong-Xiang Zou","doi":"10.2108/zs240109","DOIUrl":null,"url":null,"abstract":"<p><p>We describe a new species of loach, <i>Oreonectes daguishanensis</i> sp. nov. from Guangxi Daguishan Crocodile Lizard National Reserve in Hezhou City, Guangxi Zhuang Autonomous Region, China. Morphologically, the new species can be distinguished from congeneric species by the following combination of characters: dorsal-fin origin posterior to pelvic-fin origin; pectoral fins short, not reaching pelvic-fin base; pelvic-fin tip does not exceed anus; body width 10.2%-13.6% of standard length; eye diameter 15.5%-19.3% of head length; posterior chamber of swim bladder degenerated. Phylogenetic analysis of the mitochondrial cytochrome <i>c</i> oxidase subunit I and cytochrome <i>b</i> gene markers supports its species-level distinctiveness, with uncorrected <i>p</i>-distances ranging from 7.4% to 9.7% from closest relatives.</p>","PeriodicalId":24040,"journal":{"name":"Zoological Science","volume":"42 5","pages":"498-509"},"PeriodicalIF":1.0000,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Zoological Science","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.2108/zs240109","RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ZOOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
We describe a new species of loach, Oreonectes daguishanensis sp. nov. from Guangxi Daguishan Crocodile Lizard National Reserve in Hezhou City, Guangxi Zhuang Autonomous Region, China. Morphologically, the new species can be distinguished from congeneric species by the following combination of characters: dorsal-fin origin posterior to pelvic-fin origin; pectoral fins short, not reaching pelvic-fin base; pelvic-fin tip does not exceed anus; body width 10.2%-13.6% of standard length; eye diameter 15.5%-19.3% of head length; posterior chamber of swim bladder degenerated. Phylogenetic analysis of the mitochondrial cytochrome c oxidase subunit I and cytochrome b gene markers supports its species-level distinctiveness, with uncorrected p-distances ranging from 7.4% to 9.7% from closest relatives.
期刊介绍:
Zoological Science is published by the Zoological Society of Japan and devoted to publication of original articles, reviews and editorials that cover the broad field of zoology. The journal was founded in 1984 as a result of the consolidation of Zoological Magazine (1888–1983) and Annotationes Zoologicae Japonenses (1897–1983), the former official journals of the Zoological Society of Japan. Each annual volume consists of six regular issues, one every two months.