The poorly known blenny Alticus orientalis Tomiyama 1955 is considered a valid species and redescribed on the basis of 73 specimens (36 males and 37 females), 20.5–83.5 mm in standard length (SL). The species is characterized by the following combination of characters: dorsal-fin spines 14 (rarely 13); pectoral-fin rays 15 (very rarely 14 or 16); pelvic-fin rays I, 4; caudal-fin rays 12 (very rarely 11); supraorbital cirrus finely branched (except in specimens < ca. 20 mm SL); canine-like teeth absent on lower jaw; 1–9 small conical teeth on vomer (rarely secondarily lost); 3 (very rarely 2) pores in mandibular series; pre-anal-fin length 37.6–43.2 (mean 40.4) % SL in males, 39.9–46.9 (43.0) % SL in females; caudal-fin length 19.0–24.2 (21.8) % SL in males, 19.7–25.2 (22.4) % SL in females; pre-anal-fin length / caudal-fin length 1.6–2.2 (1.9) in males, 1.8–2.2 (1.9) in females; cheek without black spots; and head and pectoral fin without small black dots. Although A. orientalis is most similar to Alticus montanoi (Sauvage 1880) [all Japanese specimens previously identified as Alticus saliens (Lacepède 1800) are actually this species], it can be distinguished from the latter by the presence of teeth on the vomer, a greater number of pores in the mandibular series, greater pre-anal-fin length, and slightly shorter caudal-fin length. In addition, genetic analysis supports the divergence of A. orientalis from available sequences from other species of Alticus. In Japanese waters, A. orientalis is distributed around (and probably endemic to) the Izu and Ogasawara islands, whereas A. montanoi is distributed in the Ryukyu and Daito islands.

鲜为人知的粘鱼Alticus Orientalis富山1955年被认为是有效的物种，并根据73个标本（36个雄性和37个雌性），标准长度（SL）为20.5-83.5毫米对它们进行了重新描述。该物种的特征在于以下特征的组合：背鳍棘14（很少13）；背鳍棘14。胸鳍射线15（很少14或16）; 骨盆鳍射线I，4; 尾鳍射线12（很少11）; 眶上卷状细支（SL ＜20 mm的样本除外）；下颌缺少犬齿状牙齿；犁骨上有1–9个小的圆锥形牙齿（很少次生）；下颌系列毛孔3个（很少2个）；男性的肛门前鳍长度为37.6–43.2（平均40.4）％SL，女性为39.9–46.9（43.0）％SL；男性的尾鳍长度为19.0–24.2（21.8）％SL，女性为19.7–25.2（22.4）％SL；男性的肛门前鳍长度/尾鳍长度为1.6–2.2（1.9），女性为1.8–2.2（1.9）；脸颊没有黑斑；头和胸鳍没有小黑点。虽然东方A.最类似于Alticus montanoi（Sauvage 1880）[以前被鉴定为Alticus saliens（Lacepède1800 ）的所有日本标本实际上都是该物种]，可以通过在犁齿上存在牙齿来区别于后者。下颌骨毛孔的数量，较大的肛门前鳍长度和略短的尾鳍长度。另外，遗传分析支持东方拟南芥与其他Alticus物种的可用序列的差异。在日本海域，东方A.分布在伊豆岛和小gas原群岛周围（并且可能是地方性的），而蒙塔诺伊A. montanoi 分布在琉球和大东群岛。