Yellowtail clownfish, Amphiprion clarkii (Bennett, 1830), is a member of the family Pomacentridae and are commonly occur in Indo-Pacific waters. It is a commercially important fish for ornamental trade worldwide. The present study aimed to study the molecular identification of three morphotypes of Amphiprion clarkii collected from Lakshadweep (vivid yellowish), Gulf of Mannar (golden yellowish), and Andaman Islands (dark black), respectively. Molecular characterization was carried out using, mitochondrial genes such as 12S, 16S and COI, the results showed that three morphotypes were found together with common clade and have not differed significantly. Additionally, the biogeographic distribution of the A. clarkii was studied in the Indo-Pacific Ocean. Three different populations have considerable genetic divergences such as the Indo-West Pacific Ocean, Papua New Guinea, and Australia populations, where environmental features and climatic conditions may play an important role in the evolutionary relationship of the continent.

黄尾小丑鱼Amphiprion clarkii (Bennett, 1830) 是鸬鹚科的一员，常见于印度洋-太平洋水域。它是世界范围内观赏贸易的重要商业鱼类。本研究旨在研究分别从 Lakshadweep（鲜黄色）、Mannar 湾（金黄色）和安达曼群岛（深黑色）收集的 3 种形态类型的Amphiprion clarkii的分子鉴定。使用12S、16S和COI等线粒体基因进行分子表征，结果显示三种形态型与共同进化枝一起被发现并且没有显着差异。此外，A. clarkii的生物地理分布在印度洋-太平洋进行了研究。三个不同的种群具有相当大的遗传差异，例如印度-西太平洋种群、巴布亚新几内亚种群和澳大利亚种群，其中环境特征和气候条件可能在大陆的进化关系中发挥重要作用。