Isopsetta isolepis (Lockington, 1880). Butter Sole or Scalyfin Sole. To 55.2 cm (21.8 in) TL (Miller and Lea 1972). South-eastern Bering Sea, and Aleutian Islands (west to Amchitka Island) (Wilimovsky 1964), to San Pedro, southern California (Williams et al. 2018). Benthic; depth: 2 m or less to 425 m (7–1,394 ft) (min.: Miller et al. 1980; max.: Allen and Smith 1988).