The epinonid fish genus Microichthys Rüppell 1852 is reviewed. The genus includes three valid species: M. coccoi Rüppell 1852 and M. sanzoi Spartà 1950 from the Mediterranean Sea; M. atlanticus sp. nov. from the Azores, northeastern Atlantic Ocean, characterized by the following combination of characters: dorsal-fin rays VII + I, 8–9; anal-fin rays II, 8; total pectoral-fin rays 18; total gill rakers 20–23; pyloric caeca 4; pored lateral-line scales 41–43 + 2; vomerine teeth 6, in a single row; denticles on posterior margin of preopercle 6–21, on lower margin 1–2; nape slightly humped; bony rim of orbit not raised above dorsal profile; ridge present in interorbital region; oblique dark lateral bars 18–22, lower counter-bars 7; vertical black bar on anterior caudal peduncle absent; peritoneum pale; pelvic fins pale. A key to the species of Microichthys is presented.

中文翻译：

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1852 年对深水红雀鱼属 Microichthys Rüppell 的回顾，描述了来自亚速尔群岛的一个新物种（Teleostei：Epigonidae）

回顾了 Epinonid 鱼属 Microichthys Rüppell 1852。该属包括三个有效种：来自地中海的 M. coccoi Rüppell 1852 和 M. sanzoi Spartà 1950；M. atlanticus sp. 十一月 来自大西洋东北部的亚速尔群岛，具有以下特征组合：背鳍条 VII + I，8-9；臀鳍鱼 II, 8; 胸鳍总鳍条 18；总鳃耙 20-23；幽门盲肠 4; 有孔的侧线鳞片 41-43 + 2；犁齿6颗，单排；小齿在前鳃盖骨 6-21 的后缘，下缘 1-2；颈背微微隆起；眶骨边缘未高于背侧轮廓；存在于眶间区域的脊；18-22 条斜暗侧条，较低的反条 7；前尾柄上的垂直黑条不存在；腹膜苍白；腹鳍苍白。