Acantholiparis opercularis Gilbert & Burke, 1912 .

Spiny Snailfish. To 8.5 cm (3.3 in) SL (Maslenikov et al. 2013). South-eastern Kamchatka, North Pacific Ocean (Gilbert and Burke 1912); northeastern Kamchatka (Mecklenburg et al. 2002) and Commander Islands (Parin et al. 2002); eastern Bering Sea (56°42’N, 173°18’W) (Maslenikov et al. 2013); Moresby Island (52°24’N, 132°12’W), Vancouver Island (Gavin Hanke, pers. comm. to M.L.); Oregon (Stein 1978); Farallon Islands, central California (Personal communication: Scripps Institution of Oceanography Fish Collection, La Jolla, California). Depth: 300–3,609 m (984–11,840 ft) (min.: Maslenikov et al. 2013; max.: Gilbert and Burke 1912).