Lycodapus fierasfer Gilbert, 1890 .

Blackmouth Eelpout. To 15.6 cm (6.1 in) TL (Sinclair et al. 2015). Western Bering Sea on Shirshov Ridge (Mecklenburg et al. 2002); eastern Bering Sea (Peden and Anderson 1978, 1981); off Dixon Entrance, northern British Columbia (Love et al. 2005) to Peru (Anderson 1989) . Mesopelagic and bathypelagic to benthopelagic; depth: 50–2,212 m (164–7,255 ft) (Orlov and Tokranov 2019). Lycodapus grossidens Gilbert, 1915, in part, is a synonym.