similis, Rhinogobius Gill [T. N.] 1859:145 [Proceedings of the Academy of Natural Sciences of Philadelphia v. 11; ref. 1762] The Hongo Bridge, Inouzawa-gawa River, Shimoda, southern Izu Peninsula, Shizuoka Prefecture, Japan, 34°41'36.63"N, 138°56'26.25"E. Old locality: Shimoda, Izu Province, Japan. Neotype: SPMN-PI 3182. Neotype designated by Suzuki et al. 2015:[4] [ref. 33993]. •Valid as Gobius similis (Gill 1859) -- (Kuroda 1953:277 [ref. 39545], Lindberg & Krasyukova 1975:359 [ref. 7348]). •Synonym of Rhinogobius brunneus (Temminck & Schlegel 1845) -- (Kim 1997:584 [ref. 24032], Vasil'eva 1998:146 [ref. 23591], Vasil'eva 2003:S53 [ref. 28444]). •Valid as Rhinogobius similis Gill 1859 -- (Berg 1949:1077 [ref. 20662], Okada 1961:658 [ref. 6363], Mitrofanov et al. 1992:269 [ref. 37756], Coad 1995:31 [ref. 23608], Bogutskaya & Naseka 1996:55 [ref. 22798], Coad 1996:86 [ref. 25304], Coad & Abdoli 2000:55 [ref. 25296] as cf. similis, Suzuki et al. 2012:698 [ref. 31734], Suzuki et al. 2015:[4] [ref. 33993], Jouladeh-Roudbar et al. 2015:900 [ref. 34062], Takahashi & Okazaki 2017:[3] [ref. 35171], Suzuki et al. 2017:80 [ref. 35202], Endruweit 2017:558 [ref. 35366], Esmaeili et al. 2018:67 [ref. 36089], Li et al. 2018:8 [ref. 35989], Endruweit 2018:307 [ref. 36165], Dyldin et al. 2020:93 [ref. 37569], Kim et al. 2020:173 [ref. 39118], Shedko 2020:603 [782] [ref. 38169], Sonoyama et al. 2020:107 [ref. 37637], Akaike et al. 2021:29 [ref. 38809], Fu et al. 2021:9573 [ref. 39347], Guo 2021:872 [ref. 38618], Maeda et al. 2021:96 [ref. 38763], Parenti 2021:363 [ref. 38603], Suzuki et al. 2022:29 [ref. 39148], Chen et al. 2022:40 [ref. 39617], Maeda et al. 2024:532 [ref. 41367]). Current status: Valid as Rhinogobius similis Gill 1859. Oxudercidae: Gobionellinae. Distribution: East Asia: Japan, Russia (Primorskii krai), Korea, Japan, Taiwan, China, Vietnam. Possibly introduced in Singapore, introduced in Luzon (Philippines). Habitat: freshwater.