Xiphister mucosus (Girard, 1858) .

Rock Prickleback. To 58.6 cm (23.1 in) TL (Miller and Lea 1972). Kodiak Island, western Gulf of Alaska to Santa Cruz Island, southern California (Mecklenburg et al. 2002). Benthic; depth: intertidal to 18 m (60 ft) (Miller and Lea 1972).