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<article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="other" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Journal of Ichthyology</journal-id><journal-title-group><journal-title xml:lang="en">Journal of Ichthyology</journal-title><trans-title-group xml:lang="ru"><trans-title>Вопросы ихтиологии</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0042-8752</issn><issn publication-format="electronic">3034-5146</issn><publisher><publisher-name xml:lang="en">The Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">650392</article-id><article-id pub-id-type="doi">10.31857/S0042875223030098</article-id><article-id pub-id-type="edn">BYIWGT</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Статьи</subject></subj-group><subj-group subj-group-type="article-type"><subject>Unknown</subject></subj-group></article-categories><title-group><article-title xml:lang="en">A New Whalefish Species of the Genus Cetomimus (Cetomimidae) from the Tropical Part of the Central Atlantic</article-title><trans-title-group xml:lang="ru"><trans-title>Новый вид китовидковой рыбы рода <italic>Cetomimus</italic> (Cetomimidae) из тропической части Центральной Атлантики</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kobyliansky</surname><given-names>S. G.</given-names></name><name xml:lang="ru"><surname>Кобылянский</surname><given-names>С. Г.</given-names></name></name-alternatives><email>kobylianskysg@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Gordeeva</surname><given-names>N. V.</given-names></name><name xml:lang="ru"><surname>Гордеева</surname><given-names>Н. В.</given-names></name></name-alternatives><email>kobylianskysg@gmail.com</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Mishin</surname><given-names>A. V.</given-names></name><name xml:lang="ru"><surname>Мишин</surname><given-names>А. В.</given-names></name></name-alternatives><email>kobylianskysg@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow, Russia</institution></aff><aff><institution xml:lang="ru">Институт океанологии РАН – ИО РАН</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Institute of General Genetics, Russian Academy of Sciences, Moscow, Russia</institution></aff><aff><institution xml:lang="ru">Институт общей генетики РАН – ИОГен РАН</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2023-05-01" publication-format="electronic"><day>01</day><month>05</month><year>2023</year></pub-date><volume>63</volume><issue>3</issue><fpage>251</fpage><lpage>264</lpage><history><date date-type="received" iso-8601-date="2025-01-31"><day>31</day><month>01</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2023, С.Г. Кобылянский, Н.В. Гордеева, А.В. Мишин</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2023, С.Г. Кобылянский, Н.В. Гордеева, А.В. Мишин</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="en">С.Г. Кобылянский, Н.В. Гордеева, А.В. Мишин</copyright-holder><copyright-holder xml:lang="ru">С.Г. Кобылянский, Н.В. Гордеева, А.В. Мишин</copyright-holder></permissions><self-uri xlink:href="https://transsyst.ru/0042-8752/article/view/650392">https://transsyst.ru/0042-8752/article/view/650392</self-uri><abstract xml:lang="en"><p>A new species of bathypelagic whalefishes of the genus Cetomimus is described; its two specimens were caught over the central tropical part of the Mid-Atlantic Ridge at the layers of 1500–0 and 2680–0 m. The species is characterized by the presence of 31/2 gill arches (with a small slit behind the third gill arch) and cavernous tissue developed only around the anus and above the bases of the first to sixth rays of the anal fin; large pores in the lateral line canal, which are approximately as wide as this canal; the absence of large, valve-shaped triangular outgrowths along the margin of septa between pores in the posterior part of the lateral line; 42–48 vertebrae; and 20, 17–18, and 18 rays in the pectoral, dorsal, and anal fins, respectively; 17–18 pores in the lateral line canal between the upper margin of the gill cover and the end of the caudal peduncle, as well as by some other diagnostic features. The first molecular genetic data for the described species (mtDNA COX-1 sequences, or DNA barcodes) and analysis of interspecific divergence in the genus Cetomimus are given</p></abstract><trans-abstract xml:lang="ru"><p id="idm45181324337360">Приводится описание нового для науки вида батипелагической китовидковой рыбы рода <italic>Cetomimus</italic>, два экземпляра которого были пойманы над центральной тропической частью Срединно-Атлантического хребта на горизонтах 1500–0 и 2680–0 м. Для вида характерны 3½ жаберные дуги (за третьей жаберной дугой имеется маленькое отверстие), развитая только вокруг ануса и над основаниями первого–шестого лучей анального плавника кавернозная ткань; большие поры канала боковой линии, приблизительно равные ширине этого канала; отсутствие крупных, клапановидных треугольных выростов по краю перемычек между порами в задней части боковой линии; 42–48 позвонков; 20, 17–18 и 18 лучей соответственно в грудном, спинном и анальном плавниках; 17–18 пор в канале боковой линии между верхним краем жаберной крышки и концом хвостового стебля, а также некоторые иные диагностические признаки. Приведены первые молекулярно-генетические данные для описываемого вида (последовательности <italic>COX-1</italic> мтДНК, или ДНК-баркоды), а также анализ межвидовой дивергенции в роде <italic>Cetomimus</italic>.</p></trans-abstract><kwd-group xml:lang="en"><kwd>Stephanoberycoidei</kwd><kwd>Cetomimidae</kwd><kwd>new Cetomimus species</kwd><kwd>new findings</kwd><kwd>DNA barcoding</kwd><kwd>molecular phylogeny</kwd><kwd>Mid-Atlantic Ridge</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>Stephanoberycoidei</kwd><kwd>Cetomimidae</kwd><kwd>новый вид <italic>Cetomimus</italic></kwd><kwd>новые нахождения</kwd><kwd>ДНК-баркодинг</kwd><kwd>молекулярная филогения</kwd><kwd>Срединно-Атлантический хребет.</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Кобылянский С.Г., Гордеева Н.В., Котляр А.Н. 2020. 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