planifrons, Gobius Day [F.] 1873:108 [Proceedings of the Zoological Society of London 1873 (pt 1) (art. 4) (for 21 Jan. 1873); ref. 14185] Mumbai, India. Holotype (unique): ZSI 97. Type catalog: Whitehead & Talwar 1976:162 [ref. 23762]. •Valid as Pogonogobius planifrons (Day 1873) -- (Ataur Rahman 1989:301 [ref. 24860]). •Synonym of Gobiopsis macrostoma Steindachner 1861 -- (Rainboth 1996:201 [ref. 22772], Ataur Rahman 2003:327 [ref. 31338], Parenti 2021:173 [ref. 38603]). •Synonym of Gobiopsis macrostomus Steindachner 1862 -- (Kottelat 2013:409 [ref. 32989], Larson 2022:101 [ref. 39971]). Current status: Synonym of Gobiopsis macrostomus Steindachner 1861. Gobiidae: Gobiinae. Habitat: brackish, marine.