共查询到18条相似文献，搜索用时 46 毫秒
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描记纹胸属鱼类 1新种 ,珠江纹胸Glyptothoraxzhujiangensissp .nov.,采自广东新会市崖西镇白水带溪(属珠江水系 )。新种与四斑纹胸G .quadriocellatus较相近 ,但胸吸着器呈心形而不是楔形 ,腹鳍起点近吻端而不是近尾鳍基 ,头部无斑而不是在两眼后方各有 1个黄色亮斑 ,尾鳍长大于而不是小于头长 ,鳃耙数、脊椎骨数较多 ,脂鳍基较短 ,与后者明显不同。 相似文献
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贵州省云南鳅属鱼类一新种记述：（鲤形目：鳅科） 总被引：2，自引：1，他引：2
本文报道产于贵州草海的云南鳅属(Yunnanilus)鱼类一新种,定名为草海云南鳅Y.caohaiensls sp.nov.。对新种的形态特征作了详细描述,并与相似种黑斑云南鳅Y.nigromaculatus(Regan)进行了比较研究。 相似文献
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四川省高原鳅属鱼类一新种（鲤形目：鳅科） 总被引：4，自引：0，他引：4
本文记述产于凉山西溪河的高原鳅属Ｔｒｉｐｌｏｐｈｙｓａ鱼类一新种,西溪高原鳅ＴｒｉｐｌｏＰｈｙｓａｘｉｑｉｅｎｓｉｓｓｐ．ｎｏｖ．,描述了其形态和生态特征,并与近似种进行了比较。 相似文献
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本文报道１９８０年６月采自江苏省吴江县的鲤科鱼类一新种,小口小鳔ＪｕＭｉｃｒｏｐｈｙｓｏｇｏｂｉｏ ｍｉｃｒｏｓｔｏｍｕｓ ｓｐ．ｎｏｖ．。新种的口唇和鳔囊结构等性状与凌河小鳔ＪｕＭ．ｌｉｎｇｈｅｎｓｉｓ Ｘｉｅ相近似。而又以其口唇的发达程度、胸腹部裸露区的大小和位置、尾柄长与高之比以及体色斑纹的差异等与后者相区别。 相似文献
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中国须鳗属鱼类一新种(鱼纲,鳗鲡目,蛇鳗科) 总被引：1，自引：0，他引：1
在编写中国动物志(鳗鲡目)过程中,检测了保存于中国科学院动物研究所和上海水产大学历年采集的蛇鳗科鱼类标本,发现其中有1新种,定名为元鼎须鳗Cirrhimu-raena yuanding sp．nov．,以纪念中国第一代鱼类学家朱元鼎教授对中国鱼类学研究的贡献。该新种由于其上颌下表面中央所具有的凹槽和头背部后1/3处的背鳍起点等特征,是已知的其他9种须鳗属鱼类中所特有的特征,可明显区别于本属的已知种类。 相似文献
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中国蛇鳗科鱼类一新种(鱼纲:鳗鲡目:蛇鳗科) 总被引：1，自引：1，他引：1
报道采自福建沿海的蛇鳗科鱼类一新种,命名为张氏螺鳗Ophichthus tchangi sp.nov.。张氏蛇鳗由于其背鳍和臀鳍在接近尾端之前各有一段长约为头长之半的鳍棘,是蛇鳗属鱼类中所特有的特征,可明显区别于本属其他种类。 相似文献
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We describe three new species of Pareuchiloglanis. Based on a comparison of 17 valid species of Pareuchiloglanis, the genus can be divided into two groups contingent on their gill opening size and the anus position. One group, which we call the large gill opening group, has a large gill opening extending to the base of the first pectoral-fin element; the anus is obviously closer to pelvic-fin insertion than the anal-fin origin; this group includes five species distributed in the Red and Pearl Rivers, China. The other group has a small gill opening extending only to the middle base of the pectoral-fin elements; the anus is usually located at the midpoint of the pelvic-fin insertion to the anal-fin origin or slightly behind. This group includes the other 12 species, which are distributed in the Mekong and Yangtze Rivers. The large-gill-opening group can be divided into two sub-groups based on the length of the caudal peduncle. One sub-group has a long caudal-peduncle and the distance from the anal-fin origin to caudal-fin base is greater than distance from the pelvic-fin insertion. This sub-group is only distributed in the Pearl River drainage. Another sub-group has a short caudal peduncle and the distance from the anal-fin origin to the caudal-fin base is typically smaller than the distance from the pelvic-fin insertion. This sub-group is only distributed in the Red River basin of China and Vietnam. The former will be called the large-gill-opening group with long caudal peduncle in the text and only includes one species P. longicauda. During our ongoing taxonomic work of specimens collected from Nanpan-jiang and Beipan-jiang (upper Pearl River drainage in Yunnan, China), some Pareuchiloglanis specimens that had the characters of the large-gill-opening group with long caudal peduncle represent three undescribed species. 相似文献
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CARL J. FERRARIS JR. RICHARD P. VARI FLS 《Zoological Journal of the Linnean Society》1999,126(4):387-450
The Neotropical catfishes of the genus Auchenipterus Valenciennes (1840) are reviewed. The genus is hypothesized to be a monophyletic assemblage on the basis of the shared presence of grooves in the ventral surface of the head that accommodate adducted mental barbels. A possible second synapomorphy, the presence of papillae on the dorsal and medial surface of the ossified maxillary barbel of mature males, is tentatively advanced pending discovery of adult males of three species. Contrary to previous hypotheses which considered Auchenipterus to consist of a maximum of five species, we recognize 11 species, including two previously undescribed forms, A. britskii and A. menezesi: Auchenipterus is broadly distributed through the Rio Orinoco, Rio Amazonas, and Rio de La Plata basins, and the coastal drainages of the Guianas, with one species in the Rio Pindare-Mirim and Rio Parnaiba basins of northeastern Brazil. Auchenipterus nuchalis, previously thought to be broadly distributed across the range of the genus, is found to rather have a restricted distribution in the eastern portions of the Amazon basin, the lower portions of the Rio Tocantins, and lower courses of some rivers in Suriname and French Guiana. Citations of A. nuchalis from elsewhere in the range of the genus are of other species. Euanemus Müller & Troschel (1842) and Ceratocheilus Miranda Ribeiro (1918) are considered synonyms of Auchenipterus. Euanemus colymbetes Müller & Troschel (1842) is considered a synonym of Auchenipterus (fen/ata Valenciennes (1840), and A. paysanduanus Devincenzi (1933) is placed into the synonymy of A. nigripinnis Boulenger (1895). A neotype is designated for Hypopthalmus nuchalis Spix & Agassiz (1829). Lectotypes are designated for Euanemus colymbetes and Auchenipterus nigripinnis. 相似文献
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Kimberly R. Andrews Iria Fernandez-Silva John E. Randall Hsuan-Ching Ho 《Journal of fish biology》2021,99(2):335-344
A new species of Etelis is described based on 16 specimens collected from the Red Sea and Western Australia, with confirmed genetic records throughout the Indo-West Pacific. It is similar to and was often misidentified as Etelis carbunculus Cuvier, with both species sharing the diagnostic character of low number of developed gill rakers. Nonetheless, the two species are genetically divergent and differ morphologically in adult body length; proportions of eye, snout, cheek and caudal fin; shape of head, opercular spine and sagittal otolith; and coloration of the tip of the upper caudal fin. Etelis boweni has a wide Indo-west Pacific distribution that largely overlaps with E. carbunculus, and the two species are often caught on the same fishing line. 相似文献
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基于形态学和分子系统学方法, 对1974、2019—2023年间采自雅鲁藏布江下游(我国实际控制区内, 下同)的403尾鮡科鱼类标本进行分类整理。标本检视结果及结合历史记录表明, 雅鲁藏布江下游共分布有鮡科鱼类6属10种, 即黑斑原鮡
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中国缨鱼属鱼类的分类整理及一新属描述（鲤形目：鲤科） 总被引：3，自引：0，他引：3
经整理我国缨鱼属鱼类仅有１种,原属于此属的种Ｃｒｏｓｓｃｈｅｉｌｕｓ ｂａｍａｅｎｓｉｓ Ｆａｎｇ和Ｃｒｏｓｓｏｃｈｅｉｌｕｓ ｌｉｕｃｈｅｎｇｅｎｓｉｓ Ｌｉａｎｇ则归并于另一新属拟缨鱼属Ｐｓｅｕｄｏｃｒｏｓｓｏｃｈｅｉｌｕｓ ｇｅｎ．ｎｏｖ．,其上唇消失,吻皮与下唇相连,上颌与下唇相连以及口角须发达等特征与缨鱼属不同,同时其口角须发达,下唇两侧有纵行的颏汉以及下唇前缘具有显著的乳突状角质突起等 相似文献
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Ronald Fricke 《Environmental Biology of Fishes》2002,65(2):175-198
The Tripterygiidae of New Caledonia are revised and their zoogeographical relationships discussed. A total of 27 species is recognized from the territory; three species are recorded from New Caledonia for the first time [Enneapterygius howensis Fricke, 1997; Enneapterygius rhabdotus Fricke, 1994; Helcogramma trigloides (Bleeker, 1858)]. From Grande Terre, 26 species are known, with four species recorded for the first time. Seven species occur at the Ile des Pins (all new records); from the Chesterfield Islands, six species of tripterygiid fishes have been recorded; and from the Loyalty Islands, 17 species are known, with three species recorded from the island group for the first time: 15 species from Ouvéa, 11 species from Lifou (eight new records) and five species from Maré (three new records). 相似文献