Chauliodus macouni Bean, 1890 .

Pacific Viperfish. To 29.6 cm (11.6 in) TL (Balanov et al. 2009). Southern Japan (Fujii in Masuda et al. 1984) to Bering Sea (Parin and Novikova, 1974), to central Baja California (Eschmeyer and Herald 1983), and Gulf of California (Allen and Smith 1988). Larvae have been taken as far south as Cabo San Lucas, southern Baja California (Moser et al. 1993). Depth: 25–4,390 m (82–14,403 ft) (min.: Allen and Smith 1988; max.: Sheiko and Fedorov 2000).