Arctoscopus japonicus (Steindachner, 1881) .

Sailfin Sandfish. To 28 cm (11 in) FL (Kulik et al. 2016). Yellow Sea and Sea of Japan off Korea to Sea of Okhotsk, Kuril Islands (Lindberg and Krasyukova 1969), and Pacific coast of Hokkaido (Hatooka in Nakabo 2002); one record from Akutan Bay, Aleutian Islands (Mecklenburg et al. 2002). Benthic; marine and brackish waters (Dyldin and Orlov 2017); depth: 0–550 m (1,804 ft) (min.: Federov et al. 2003).