gracilis, Periophthalmus Eggert [B.] 1935:79, Pl. 6 (fig. 22) [Zoologische Jahrbücher, Abteilung für Systematik, Geographie und Biologie der Tiere (Jena) v. 67; ref. 13880] Jakarta and Tjilatjap, Java, Indonesia; Sumatra, Indonesia. Syntypes: MSNG (2, not found); PMJ (1 each) 657, 670, 790, 791, 1086, 1087. Comments on types for Periophthalmus gracilis Eggert 1935: Konstantinidis et al. 2016:[4] [ref. 34503]. •Valid as Periophthalmus gracilis Eggert 1935 -- (Murdy 1989:37 [ref. 13628], Kottelat et al. 1993:149 [ref. 23448], Mohsin & Ambak 1996:566 [ref. 27969], Larson in Randall & Lim 2000:639 [ref. 25122], Larson & Murdy 2001:3602 [ref. 26293], Khaironizam & Norma-Rashid 2003:250 [ref. 27124], Larson & Takita 2004:184 [ref. 28075], Hoese & Larson 2006:1673 [ref. 29097], Larson et al. 2008:140 [ref. 29532], Jaafar & Larson 2008:952 [ref. 29863], Murdy 2011:105 [ref. 31728], Larson et al. 2013:205 [ref. 32988], Kottelat 2013:418 [ref. 32989], Jaafar et al. 2016:283 [ref. 34685], Murdy & Jaafar 2017:24 [ref. 35561], Parenti 2021:391 [ref. 38603], Taki et al. 2021:477 [ref. 39830]). Current status: Valid as Periophthalmus gracilis Eggert 1935. Oxudercidae: Oxudercinae. Distribution: Eastern Indian Ocean, western Pacific: Indonesia to Vietnam. Habitat: brackish, marine.