polyakovi, Pungitius Shedko [S. V.], Shedko [M. B.] & Pietsch [T. W.] 2005:223, Figs. 1-2 [Flora and Fauna of Sakhalin Island; ref. 29561] 46°47.035'N, 143°47.337'E, southeastern Sakhalin Island, Russia. Holotype: ZIN 53441. Paratypes: ZIN 53442 (25). •Possibly the same as Pungitius tymensis (Nikolskii 1889) -- (Dyldin & Orlov 2017:57 [ref. 35138]). •Valid as Pungitius polyakovi Shedko, Shedko & Pietsch 2005 -- (Takahashi et al. 2016:49 [ref. 34337], Dyldin & Orlov 2017:57 [ref. 35138], Dyldin et al. 2020:108, 114 [ref. 37569], Dyldin et al. 2021:58 [ref. 38804], Matsumoto et al. 2021:18 [ref. 38508], Wang et al. 2021:[3] [ref. 38800], Dyldin & Orlov 2022:35 [ref. 38972]). Current status: Valid as Pungitius polyakovi Shedko, Shedko & Pietsch 2005. Gasterosteidae. Distribution: East Asia: southeastern Sakhalin Island (Russia). Habitat: freshwater, brackish.