Benthodesmus pacificus Parin & Becker, 1970 .

North Pacific Frostfish. To 112 cm (44.1 in) SL. Kyushu-Palau Ridge and Ryukyu Islands, Japan (Nakamura and Parin 1993); British Columbia and Puget Sound, Washington (Peden and Hughes 1986) to Monterey Bay, central California (Anderson and Cailliet 1975). Benthopelagic; depth: to 380 m (1,246 ft) and deeper, sometimes migrating to surface; juveniles mesopelagic (Nakamura and Parin 1993). Originally described as a subspecies of Benthodesmus elongatus (Clarke, 1879), this form was treated as a full species by Nakamura and Parin (1993) and recognized as such by Nelson et al. (2004); B. pacificus occurs in the North Pacific, whereas B. elongatus occurs in the Southern Hemisphere in the Indian, Pacific, and Atlantic Oceans. Records from British Columbia and Washington (Peden and Hughes 1986) were reported as Benthodesmus tenuis (Günther, 1877) .