transmontanus, Acipenser Richardson [J.] (ex Gairdner) 1836:278, Pl. 97 (fig. 2) [Fauna Boreali-Americana Part 3; ref. 3731] Vancouver, Washington, U.S.A; and Columbia River as high as Fort Colville. Syntypes: (2) whereabouts unknown. •Valid as Acipenser transmontanus Richardson 1836 -- (Lee et al. 1980:42 [ref. 22416], Eschmeyer & Herald 1983:61 [ref. 9277], McAllister 1990:42 [ref. 14674], Page & Burr 1991:27 [ref. 18983], Artyukhin 1995:7 [ref. 23782], Bemis et al. 1997:37 [ref. 22871], Birstein & Bemis 1997:160 [ref. 29760], Scott & Crossman 1998:96 [ref. 24570], Fuller et al. 1999:22 [ref. 25838], Dyer 2000:89 [ref. 26678], Musick et al. 2000:10 [ref. 24959], Brito M. 2002:10 [ref. 37221], Mecklenburg et al. 2002:115 [ref. 25968], Moyle 2002:106 [ref. 26449], Wydoski & Whitney 2003:41 [ref. 27816], Nelson et al. 2004:58 [ref. 27807], Love et al. 2005:15 [ref. 37547], Scharpf 2005:7 [ref. 28940], McPhail 2007:30 [ref. 31199], Minckley & Marsh 2009:69 [ref. 31114], Page & Burr 2011:137 [ref. 31215], Hilton et al. 2011:136 [ref. 31407], Page et al. 2013:58 [ref. 32708], Pietsch & Orr 2015:18 [ref. 34694], Kells et al. 2016:88 [ref. 35888], Burton & Lea 2019:34 [ref. 37205], Lorenzoni et al. 2019:251 [ref. 37108], Love et al. 2021:31 [ref. 39279], Page et al. 2023:49 [ref. 40505]). Current status: Valid as Acipenser transmontanus Richardson 1836. Acipenseridae. Distribution: Eastern Pacific: Gulf of Alaska to Monterey, California (U.S.A.) and to Pacific coast of northern Baja California (Mexico); introduced in Lower Colorado River, Arizona, U.S.A., Chile, and Italy. Habitat: freshwater, brackish, marine.