iridea, Salmo Gibbons [W. P.] 1855:[2] col. 6 [The Pacific [newspaper] v. 4 (no. 17); ref. 18107] San Leandro Creek, Alameda County, California, U.S.A. Syntypes: ?USNM 594 (1), ?USNM 228615 (2). Appeared first as above on 30 Mar.; then in Ayres 1855:36 [ref. 18107]. Emended to Salmo irideus by Günther 1866:119 [ref. 1983]. •Valid as Salmo irideus Gibbons 1855 -- (Herrera 1896:30 [ref. 39336], Kuroda 1953:273 [ref. 39545], Okada 1961:724 [ref. 6363]). •Synonym of Salmo gairdnerii Richardson 1836 -- (Cadwallader & Backhouse 1983:215 [ref. 25473], Smith 1986:228 [ref. 22186], Scott & Crossman 1998:191 [ref. 24570] as gairdneri). •Synonym of Salmo gairdnerii Richardson 1837 but a valid subspecies iridius Gibbons 1855 -- (Pequeño 1989:29 [ref. 14125], La Rivers 1994:306 [ref. 23389], Raju Thomas et al. 2002:50 [ref. 26359] as irredius). •Synonym of Oncorhynchus mykiss (Walbaum 1792) -- (Sigler & Sigler 1996:177 [ref. 25943], Mecklenburg et al. 2002:204 [ref. 25968], Minckley & Marsh 2009:90 [ref. 31114]). •Synonym of Parasalmo mykiss (Walbaum 1792) -- (Dorofeeva & Savvaitova 1998:34 [ref. 23574]). •Synonym of Oncorhynchus mykiss (Walbaum 1792), but a valid subspecies irideus (Gibbons 1855) -- (Behnke 1992:191 [ref. 23385], Stearley & Smith 1993:21 [ref. 26683], Thurow et al. 1997:1094 [ref. 25523], Fuller et al. 1999:250 [ref. 25838], Moyle 2002:272 [ref. 26449], Scharpf 2006:31 [ref. 30386], McPhail 2007:275 [ref. 31199], Page & Burr 2011:411 [ref. 31215], Penaluna et al. 2016:291 [ref. 34726], Campbell et al. 2023:2 [ref. 40050]). Current status: Synonym of Oncorhynchus mykiss (Walbaum 1792). Salmonidae: Salmoninae. Distribution: North America: west of the Cascade Range and Sierra Nevada along the Pacific Coast, Alaska, Canada and to southern California, U.S.A. [subspecies irideus]. Habitat: freshwater, brackish, marine.