Individual specimens of Myripristis jacobus Cuvier, 1829 and Scarus taeniopterus Lesson, 1829 were collected from Gopalpur‐on‐sea, Odisha coast, Bay of Bengal. Both the fish samples were assigned species level tags using the conventional taxonomic methods. The capture of both the fish species is of particular interest in that they were new to the Bay of Bengal. Molecular analysis using the mitochondrial cytochrome oxidase subunit I (COI) gene showed high confidence sequence similarity in species identification. The resultant phylogenetic relationships strongly support the monophyly of both the genus with congruent clustering of both the species according to their morphological identification. In addition, the time tree produced is in complete agreement with the recent studies. These studies conclusively prove that both the species might have been originated during the middle to the late Miocene period. Furthermore, both fish species are typical inhabitants of stigmatized coral reefs, confined to the reef regions. These fish species perhaps migrated to the Bengal Bay from the Andaman and Nicobar Islands reef regions because of climatic changes.

中文翻译：

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孟加拉湾新近产的Myripristis jacobus和tausopterus的分子证据：是零星出现还是初步定殖？

Myripristis jacobus Cuvier，1829年和Scarus taeniopterus的个体标本1829年的课程是从孟加拉湾奥里萨邦海岸的Gopalpur-on-sea收集的。使用常规分类方法，为这两个鱼样品分配了种级标签。捕获这两种鱼类特别有趣，因为它们是孟加拉湾的新鱼类。使用线粒体细胞色素氧化酶亚基I（COI）基因的分子分析显示，物种鉴定具有很高的置信度序列相似性。根据它们的形态学鉴定，所得的系统发生关系强烈支持两个属的单亲性，并且两个物种的同等聚集。此外，生成的时间树与最近的研究完全一致。这些研究最终证明，这两个物种都可能起源于中新世中期至晚期。此外，两种鱼类都是受污名化的珊瑚礁的典型居民，仅限于珊瑚礁区域。由于气候变化，这些鱼类可能从安达曼和尼科巴群岛的珊瑚礁地区迁移到了孟加拉湾。