cyclophthalmus, Cottus Sideleva [V. G.], Kesminas [V.] & Zhidkov [Z. V.] 2022:43, Figs. 2-3 [European Journal of Taxonomy v. 834; ref. 39468] Karnaya River near Tokarevka Village, Kaliningrad Region, Russia, 54°24'59.4"N, 22°23'50.4"E. Holotype: ZIN 56687. Paratypes: ZIN 56688 (8). Plus additional non-type material. •Valid as Cottus cyclophthalmus Sideleva, Kesminas & Zhidkov 2022. Current status: Valid as Cottus cyclophthalmus Sideleva, Kesminas & Zhidkov 2022. Cottidae. Distribution: North-east Europe: Krasnaya, Neris, Žeimena and Sesartis River drainages (Neman/Nemunas River system) and Šerkšnė River drainage (Venta River system), Baltic Sea basin. Habitat: freshwater.