Quang Van Vo, Yusuke Hibino, Hsuan-Ching Ho, Thao Thu Thi Le, Ying Giat Seah
{"title":"Two越南蛇鳗新种（蛇鳗目，蛇鳗科），并重新描述了O.macrochir （Bleeker）和O.rutidoderma （Bleeker）。","authors":"Quang Van Vo, Yusuke Hibino, Hsuan-Ching Ho, Thao Thu Thi Le, Ying Giat Seah","doi":"10.3897/zookeys.1231.137323","DOIUrl":null,"url":null,"abstract":"<p><p>Two new extremely elongate snake eel of the genus <i>Ophichthus</i> are described based on specimens collected from Vietnamese waters. <i>Ophichthuscuulongensis</i> Vo, Hibino & Ho, <b>sp. nov.</b> is distinguished from its congeners by having the dorsal-fin origin slightly behind the pectoral-fin tip, mean vertebral formula 14-63-202, range 12-17/60-64/199-207; teeth on jaws biserial to triserial; dorsal body dark brown, ventral body pale, anal fin initially white but changing to darker towards its tip. <i>Ophichthusnguyenorum</i> Vo, Hibino & Ho, <b>sp. nov.</b> is distinguished by having a snout rather pointed but the occipital convex (duck-shaped); body with numerous longitudinal wrinkles, weak on posterior abdomen; dorsal-fin origin slightly behind the pectoral-fin tip; one row of teeth on the maxilla anteriorly but increasing posteriorly; two rows on the lower jaw; all teeth small; body dark, usually including abdomen; dorsal fin darker with dark margin; anal fin initially pale but changing to darker towards tip; mean vertebral formula: 15-62-192, range 13-17/61-64/190-196. Descriptions of two related species, <i>O.macrochir</i> (Bleeker, 1852) and <i>O.rutidoderma</i> (Bleeker, 1852), are provided with updated morphological data.</p>","PeriodicalId":24051,"journal":{"name":"ZooKeys","volume":"1231 ","pages":"311-329"},"PeriodicalIF":1.3000,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11926612/pdf/","citationCount":"0","resultStr":"{\"title\":\"Two new snake eels (Anguilliformes, Ophichthidae, <i>Ophichthus</i>) from Viet Nam, with redescriptions of <i>O.macrochir</i> (Bleeker) and <i>O.rutidoderma</i> (Bleeker).\",\"authors\":\"Quang Van Vo, Yusuke Hibino, Hsuan-Ching Ho, Thao Thu Thi Le, Ying Giat Seah\",\"doi\":\"10.3897/zookeys.1231.137323\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>Two new extremely elongate snake eel of the genus <i>Ophichthus</i> are described based on specimens collected from Vietnamese waters. <i>Ophichthuscuulongensis</i> Vo, Hibino & Ho, <b>sp. nov.</b> is distinguished from its congeners by having the dorsal-fin origin slightly behind the pectoral-fin tip, mean vertebral formula 14-63-202, range 12-17/60-64/199-207; teeth on jaws biserial to triserial; dorsal body dark brown, ventral body pale, anal fin initially white but changing to darker towards its tip. <i>Ophichthusnguyenorum</i> Vo, Hibino & Ho, <b>sp. nov.</b> is distinguished by having a snout rather pointed but the occipital convex (duck-shaped); body with numerous longitudinal wrinkles, weak on posterior abdomen; dorsal-fin origin slightly behind the pectoral-fin tip; one row of teeth on the maxilla anteriorly but increasing posteriorly; two rows on the lower jaw; all teeth small; body dark, usually including abdomen; dorsal fin darker with dark margin; anal fin initially pale but changing to darker towards tip; mean vertebral formula: 15-62-192, range 13-17/61-64/190-196. Descriptions of two related species, <i>O.macrochir</i> (Bleeker, 1852) and <i>O.rutidoderma</i> (Bleeker, 1852), are provided with updated morphological data.</p>\",\"PeriodicalId\":24051,\"journal\":{\"name\":\"ZooKeys\",\"volume\":\"1231 \",\"pages\":\"311-329\"},\"PeriodicalIF\":1.3000,\"publicationDate\":\"2025-03-13\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11926612/pdf/\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"ZooKeys\",\"FirstCategoryId\":\"99\",\"ListUrlMain\":\"https://doi.org/10.3897/zookeys.1231.137323\",\"RegionNum\":3,\"RegionCategory\":\"生物学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"2025/1/1 0:00:00\",\"PubModel\":\"eCollection\",\"JCR\":\"Q2\",\"JCRName\":\"ZOOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"ZooKeys","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.3897/zookeys.1231.137323","RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/1/1 0:00:00","PubModel":"eCollection","JCR":"Q2","JCRName":"ZOOLOGY","Score":null,"Total":0}
Two new snake eels (Anguilliformes, Ophichthidae, Ophichthus) from Viet Nam, with redescriptions of O.macrochir (Bleeker) and O.rutidoderma (Bleeker).
Two new extremely elongate snake eel of the genus Ophichthus are described based on specimens collected from Vietnamese waters. Ophichthuscuulongensis Vo, Hibino & Ho, sp. nov. is distinguished from its congeners by having the dorsal-fin origin slightly behind the pectoral-fin tip, mean vertebral formula 14-63-202, range 12-17/60-64/199-207; teeth on jaws biserial to triserial; dorsal body dark brown, ventral body pale, anal fin initially white but changing to darker towards its tip. Ophichthusnguyenorum Vo, Hibino & Ho, sp. nov. is distinguished by having a snout rather pointed but the occipital convex (duck-shaped); body with numerous longitudinal wrinkles, weak on posterior abdomen; dorsal-fin origin slightly behind the pectoral-fin tip; one row of teeth on the maxilla anteriorly but increasing posteriorly; two rows on the lower jaw; all teeth small; body dark, usually including abdomen; dorsal fin darker with dark margin; anal fin initially pale but changing to darker towards tip; mean vertebral formula: 15-62-192, range 13-17/61-64/190-196. Descriptions of two related species, O.macrochir (Bleeker, 1852) and O.rutidoderma (Bleeker, 1852), are provided with updated morphological data.
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ZooKeys is a peer-reviewed, open-access, online and print, rapidly produced journal launched to support free exchange of ideas and information in systematic zoology, phylogeny and biogeography.
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