semilineatus, Apogon Temminck [C. J.] & Schlegel [H.] 1843:4, Pl. 2 (fig. 3) [Fauna Japonica Part 1; ref. 4370] Japan. Lectotype: RMNH 65a (largest). Paralectotypes: RMNH 64 (2), 65 (2 of 3, not largest), 66 (2 of 4); ?MNHN. Lectotype selected by Boeseman 1947:19 [ref. 12876]. •Valid as Apogon semilineatus Temminck & Schlegel 1843 -- (Hayashi in Masuda et al. 1984:146 [ref. 6441], Allen & Swainston 1988:66 [ref. 25477], Paxton et al. 1989:550 [ref. 12442], Lee & Kim 1996:64 [ref. 24706], Allen 1997:102 [ref. 23977], Chen et al. 1997:57 [ref. 26476] dated 1843, Myers 1999:128 [ref. 23965], Allen 1999:2606 [ref. 24812], Nakabo 2000:768 [ref. 25086], Allen in Randall & Lim 2000:613 [ref. 25122], Sadovy & Cornish 2000:99 [ref. 25480], Shimizu 2001:28 [ref. 25799], Shinohara et al. 2000:178 [ref. 25987], Hutchins 2001:32 [ref. 25847], Nakabo 2002:768 [ref. 26001], Choi et al. 2003:320, 598 [ref. 26218], Roe et al. 2002:903 [ref. 26504], Allen et al. 2006:1095 [ref. 29004], Fricke et al. 2013:258 [ref. 32706], Kottelat 2013:330 [ref. 32989], Yoshida et al. 2013:108 [ref. 34464]). •Valid as Ostorhinchus semilineatus (Temminck & Schlegel 1842) -- (Larson et al. 2013:113 [ref. 32988] dated 1842, Mabuchi et al. 2014:201 [ref. 33426], Mabuchi et al. 2015:44 [ref. 34429], Kuiter & Kozawa 2019:96 [ref. 36965], Kim et al. 2020:119 [ref. 39118], Sonoyama et al. 2020:60 [ref. 37637], Gloerfelt-Tarp & Kailola 2022:155 [ref. 41223], Negoro & Motomura 2024:4 [ref. 41284]). Current status: Valid as Ostorhinchus semilineatus (Temminck & Schlegel 1843). Apogonidae: Apogoninae. Distribution: Northwestern Pacific: Korea and Japan. Habitat: brackish, marine.