Mesocottus Gratzianov [V. I.] 1907:655, 660 Masc. Cottus haitej Dybowski 1869. Type by original designation (also monotypic). •Valid as Mesocottus Gratzianov 1907 -- (Washington et al. 1984:443 [ref. 13660], Sideleva 1998:153 [ref. 23595], Parin et al. 2002:S80 [ref. 28300], Bogutskaya & Naseka 2004:190 [ref. 28183] with author as Gratzianow, Goto et al. 2014:1 [ref. 33456], Parin et al. 2014:259 [ref. 33547], Zhang et al. 2016:193 [ref. 34477], Dyldin & Orlov 2017:65 [ref. 35138]). Current status: Valid as Mesocottus Gratzianov 1907. Cottidae.