tenuis, Boleophthalmus Day [F.] 1876:305, Pl. 65 (fig. 1) [The fishes of India Part 2; ref. 1081] Estuaries of Karachi, Sind, Pakistan. Lectotype: AMS B.7618. Paralectotypes and/or Day specimens: AMS B.8037 (1); BMNH 1889.2.1.3482-3491 (10); MNHN A-0015 (1); NMW 76986 (1); MZUF 2801 (1); RMNH 2005 (1); ZMB 10784 (1); ZSI 92 (1, lost), 150 (1, figured specimen, lost). Type catalog: Whitehead & Talwar 1976:162 [ref. 23762], Bauchot et al. 1991:19-20 [ref. 19958], Ferraris et al. 2000:302-303 [ref. 25110]. Lectotype designated by Murdy 1989:53 [ref. 13628]. Reasons for loss of ZSI type specimens during WWII see Chopra 1947:349-350 [ref. 33077]. •Valid as Scartelaos tenuis (Day 1876) -- (Murdy 1989:52 [ref. 13628], Coad 1991:27 [ref. 15702], Randall 1995:342 [ref. 22896], Carpenter et al. 1997:213 [ref. 23922], Manilo & Bogorodsky 2003:S118 [ref. 27377], Murdy 2011:104 [ref. 31728], Jouladeh-Roudbar et al. 2015:900 [ref. 34062], Esmaeili et al. 2015:123 [ref. 35030], Esmaeili et al. 2017:86 [ref. 35254], Murdy & Jaafar 2017:31 [ref. 35561], Ali et al. 2018:338 [ref. 36183], Esmaeili et al. 2018:67 [ref. 36089], Eagderi et al. 2019:66 [ref. 37020], Esmaeili et al. 2019:[6] [ref. 37285], Jouladeh-Roudbar et al. 2020:248 [ref. 37983], Parenti 2021:396 [ref. 38603], Larson 2022:176 [ref. 39971], Çiçek et al. 2024:323 [ref. 40789]). Current status: Valid as Scartelaos tenuis (Day 1876). Oxudercidae: Oxudercinae. Distribution: Northwestern Indian Ocean: Persian Gulf and Gulf of Oman to Pakistan. IUCN (2019): Least Concern. Habitat: brackish, marine.