rex, Etheostoma Jordan [D. S.] & Evermann [B. W.] in Jordan 1889:357, Pl. 45 (fig. 9) [Proceedings of the United States National Museum v. 11 (no. 723); ref. 10478] Roanoke River, near Roanoke, Virginia, U.S.A. Syntypes: USNM 39858 (?2). Type catalog: Collette & Knapp 1967:37 [ref. 20211]. •Valid as Percina rex (Jordan & Evermann 1889) -- (Lee et al. 1980:738 [ref. 22416], Kuehne & Barbour 1983:58 [ref. 38055], Page 1983:49 [ref. 22189], Thompson 1985:14 [ref. 17281], Burkhead & Jenkins 1991:395 [ref. 21804], Page & Burr 1991:287 [ref. 18983], Jenkins & Burkhead 1994:785 [ref. 21581], Thompson 1997:2 [ref. 23154], Nelson et al. 2004:137 [ref. 27807], Scharpf 2008:39 [ref. 30399], Page & Burr 2011:529 [ref. 31215], Page et al. 2013:141 [ref. 32708], Near et al. 2017:303 [ref. 35622]). Current status: Valid as Percina rex (Jordan & Evermann 1889). Percidae: Etheostomatinae. Distribution: North America: Virginia (U.S.A.). Hydridizes with Percina nevisensis (Cope 1870) (see Roberts 2011:22 [ref. 39995]). Habitat: freshwater.