Opistognathus abei sp. nov. (Perciformes: Opistognathidae) is described on the basis of two specimens (28.5–30.9 mm in standard length) collected from the Oki Islands, Shimane Prefecture, Japan, at a depth of 25–26 m. The new species is characterized by the following combination of characters: posterior end of upper jaw rigid, without flexible lamina; dorsal-fin rays XI, 13; anal-fin rays II, 13; gill rakers 8 + 16 or 17 = 24 or 25; vertebrae 10 + 18 = 28; longitudinal scale rows ca. 40–43; lateral line terminating below 2nd or 3rd soft ray of dorsal fin; cephalic sensory pores comparatively poorly developed, head sparsely covered with small cephalic pores; no scales above lateral line; body scales absent anterior to vertical below 6th or 7th dorsal-fin spine base; vomerine teeth absent; 3rd infraorbital without suborbital shelf; body generally brown, except for white belly, with two longitudinal rows of 6–9 white blotches; head region without blotches, spots, or stripes; dorsal fin generally hyaline to faint brown, with a yellowish-brown stripe through distal edge of spinous part and just below middle of soft-rayed part, and an ocellus between 2nd and 7th spines; anal and caudal fins uniformly hyaline to faint brown; pectoral-fin base with large white oval blotch; pelvic fin uniformly translucent white.

阿贝后颚龙sp.十一月（鲈形目：后颌科）根据从日本岛根县隐岐群岛 25-26 m 深处采集的两个标本（标准长度 28.5-30.9 mm）进行描述。该新种具有以下特征组合：上颌后端坚硬，无柔韧板；背鳍条 XI, 13;臀鳍条 II, 13;鳃耙 8 + 16 或 17 = 24 或 25；椎骨 10 + 18 = 28；纵向刻度行约40–43；侧线终止于背鳍第二或第三软鳍下方；头感觉孔较不发达，头部稀疏地布满小头孔；侧线以上无鳞；第 6 或第 7 背鳍棘基部前部垂直下方无体鳞；犁骨齿缺失；第三轨道下没有轨道架；体大体棕色，除腹部白色外，有两纵行6-9个白色斑点；头部区域无斑点、斑点或条纹；背鳍一般透明至淡棕色，有一条黄棕色条纹穿过棘部分的远端边缘和软射线部分中部的正下方，在第2和第7棘之间有一个单眼；臀鳍和尾鳍均匀透明至淡棕色；胸鳍基部有大的白色椭圆形斑点；腹鳍均匀半透明白色。