siamensis, Otolithoides Fowler [H. W.] 1934:153, Fig. 121 [Proceedings of the Academy of Natural Sciences of Philadelphia v. 86; ref. 1417] Bangkok, Thailand. Holotype (unique): ANSP 60171. Type catalog: Böhlke 1984:152 [ref. 13621]. Subjectively invalid; secondarily preoccupied in Johnius by Sciaena siamensis Hora 1924. •Synonym of Johnius trachycephalus (Bleeker 1851) -- (Trewavas 1977:421 [ref. 4459], Sasaki 2001:3151 [ref. 26108], Kottelat 2013:359 [ref. 32989], Parenti 2020:24 [ref. 37439]). 2°Homonym. Current status: Synonym of Johnius trachycephalus (Bleeker 1851). Sciaenidae. Habitat: freshwater, brackish, marine.