Pseudanthias hangapikosp. nov. (Teleostei, Serranidae, Anthiadinae) is herein described from three specimens collected from a depth of 83 m in a mesophotic coral ecosystem off Hanga Piko, Rapa Nui (Easter Island), Chile. Pseudanthias hangapikosp. nov. can be distinguished from its congeners in live coloration and by the following combination of characters: dorsal-fin rays X, 17; anal-fin rays III, 8; pectoral-fin rays 16 (left side of one specimen 17); vertebrae 10+16; scales relatively large, two scales above lateral-line to base of fifth dorsal spine, and 16–17 circumpeduncular scales; gill rakers 11+23; and a slender body, with greatest body depth 3.6 (3.4–3.8) in SL. The most similar DNA barcodes (mitochondrial COI gene) are from Pseudanthias ventralis Randall, 1979 and Pseudanthias hawaiiensis Randall, 1979, with 16.8% and 17.0% uncorrected divergence, respectively. This fish is one of four new species that were documented from a pair of technical dives at a single location in Rapa Nui, emphasizing the high number of undescribed species likely still unknown in mesophotic coral ecosystems, especially in geographically remote locations. Pseudanthias hangapikosp. nov. adds to the Rapa Nui ichthyofauna, which hosts the second-highest level of endemism in both shallow and deep-water fishes.

中文翻译：

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Pseudanthias hangapiko，一种来自拉帕努伊岛（复活节岛）的新花螟（Teleostei、Serranidae、Anthiadinae）

Pseudanthias hangapikosp。十一月 （Teleostei，Serranidae，Anthiadinae）在本文中描述为从智利拉帕努伊（复活节岛）Hanga Piko 附近的中光珊瑚生态系统中 83 m 深度收集的三个标本。Pseudanthias hangapikosp。十一月 可以通过活体着色和以下特征组合与它的同类区分开来：背鳍射线 X, 17; 臀鳍条 III, 8; 胸鳍射线 16 (一个标本 17 的左侧); 椎骨 10+16；鳞片较大，侧线以上至第五背棘基部有2片鳞片，有16-17片脚环鳞片；鳃耙11+23；和细长的身体，最大的身体深度在 3.6 (3.4-3.8) SL。最相似的 DNA 条形码（线粒体 COI 基因）来自 Pseudanthias ventralis Randall, 1979 和 Pseudanthias hawaiiensis Randall, 1979，分别为 16.8% 和 17。分别为 0% 未校正的散度。这种鱼是在 Rapa Nui 的一个地点进行的一对技术潜水记录的四个新物种之一，强调了在中光珊瑚生态系统中可能仍然未知的大量未描述物种，特别是在地理偏远地区。Pseudanthias hangapikosp。十一月 增加了 Rapa Nui 鱼群，它在浅水和深水鱼类中拥有第二高的特有物种。