Icosteus aenigmaticus Lockington, 1880 .

Ragfish. To 2.13 m (7 ft) TL (Clemens and Wilby 1946) or more (Hart 1973). Sea of Okhotsk (Sheiko and Fedorov 2000), and Pacific coast of southern Honshu, Japan (Suzuki and Tsukada 1994), to Bering Sea and Gulf of Alaska (Mecklenburg et al. 2002), to Point Loma, southern California (Miller and Lea 1972). Larvae have been taken off northernmost Baja California (Moser et al. 1994). Depth: intertidal to 1,420 m (4,658 ft) (min.: Carlisle et al. 1960; max.: Mecklenburg et al. 2002). Ragfish under about 30 cm (12 in) TL in shallow water or offshore near surface; adults near bottom and deep (Mecklenburg et al. 2002). Adults occasionally found at the shoreline or in the surf evidently are out of their normal depth range and may be injured or disoriented. Acrotus willoughbyi Bean, 1888, is a junior synonym; complete synonymy given in Mecklenburg (2003).