asperrima, Cottus Rutter [C. L.] 1908:144, Fig. 3 [Bulletin of the Bureau of Fisheries v. 27 (Doc. 637) (for 1907); ref. 12415] Fall River at Dana and Fall River Mills, California, U.S.A. Holotype: USNM 58500. Paratypes: (5) CAS-SU 9968 (2), USNM 126463 (1). Type catalog: Böhlke 1953:128 [ref. 12291]. •Valid as Cottus asperrimus Rutter 1908 -- (Lee et al. 1980:803 [ref. 22416], Page & Burr 1991:249 [ref. 18983], Moyle 2002:360 [ref. 26449], Nelson et al. 2004:119 [ref. 27807], Scharpf 2008:7 [ref. 30399], Page & Burr 2011:474 [ref. 31215], Page et al. 2013:122 [ref. 32708], Goto et al. 2014:[9] [ref. 33456], Young et al. 2022:327 [ref. 39356], Page et al. 2023:183 [ref. 40505]). Current status: Valid as Cottus asperrimus Rutter 1908. Cottidae. Distribution: North America: California (U.S.A.) endemic. Habitat: freshwater.