Gymnocanthus Swainson [W.] 1839:181, 271 Masc. Cottus ventralis Cuvier 1829. Type by monotypy. Spelled Gymnacanthus by authors; spelled Gymnocanthus three times by Swainson and therefore there is no evidence of an inadvertent error. •Valid as Gymnocanthus Swainson 1839 -- (Watanabe 1960:51 [ref. 11959], Neelov 1973:595 [ref. 7219] as Gymnacanthus, Washington et al. 1984:442 [ref. 13660], Yabe in Masuda et al. 1984:328 [ref. 6441], Yabe 1985:111 [ref. 11522], Fedorov in Whitehead et al. 1986:1249 [ref. 13677] as Gymnacanthus, Lindberg & Krasyukova 1987:196 [ref. 15964], Mecklenburg et al. 2002:401 [ref. 25968], Parin et al. 2002:S74 [ref. 28300] as Gymnacanthus, Mecklenburg et al. 2011:122 [ref. 31212], Parin et al. 2014:246 [ref. 33547], Mecklenburg et al. 2016:57 [ref. 34440], Dyldin & Orlov 2017:63 [ref. 35138]). Current status: Valid as Gymnocanthus Swainson 1839. Psychrolutidae: Icelinae.