Stellerina xyosterna, the Pricklebreast poacher, is a species of poacher native to the eastern Pacific Ocean from Canada to northern Mexico. This species can be found on sandy or muddy bottoms at depths of from 5 to 75 metres (16 to 246 ft). This species grows to a length of 16 centimetres (6.3 in) TL. This species is the only known member of its genus.