gratzianowi, Cottus Sideleva [V. G.], Naseka [A. M.] & Zhidkov [Z. V.] 2015:420, Figs. 2-3, 5a-6a [Zootaxa 3949 (no. 3); ref. 33770] Ukhtomitsa River village of Korotetskaya (Vologda Province), 60°18′19″N, 38°40′30″E, Onega River drainage, White Sea basin, Arctic basin. Holotype: ZIN 55596. Paratypes: ZIN 55597. •Valid as Cottus gratzianowi Sideleva, Naseka & Zhidkov 2015 -- (Dyldin et al. 2020:110 [ref. 37569], Dyldin et al. 2020:114 [ref. 37569]). Current status: Valid as Cottus gratzianowi Sideleva, Naseka & Zhidkov 2015. Cottidae. Distribution: Northeastern Europe: Onega River drainage, White Sea basin, Arctic basin (Russia). Habitat: freshwater.