obtusus, Rhinichthys Agassiz [L.] 1854:357 [19] [American Journal of Science and Arts (Series 2) v. 17; ref. 69] Spring Branch, Tennessee River, near Huntsville, Madison County, Alabama, U.S.A. Syntypes: MCZ 1839 (orig. 16, now 8), 153933 (phryngeal arches); NMW 51495 [ex MCZ 1839] (6); UMMZ 86652 [ex MCZ 1839] (2); USNM 17890 (1), 101125 (1). Type catalog: Gilbert 1998:124 [ref. 23395], Gilbert 2009:159 [ref. 30728]. On p. 19 of separate. •Synonym of Rhinichthys atratulus (Hermann 1804), but a valid subspecies -- (Lee et al. 1980:352 [ref. 22416], Stauffer et al. 1995:159 [ref. 23376], Gilbert 1998:124 [ref. 23395]). •Synonym of Rhinichthys atratulus (Hermann 1804) -- (Boschung & Mayden 2004:279 [ref. 27995]). •Valid as Rhinichthys obtusus Agassiz 1854 -- (Nelson et al. 2004:77 [ref. 27807], Bailey et al. 2004:109 [ref. 27882], Scharpf 2005:38 [ref. 28940], Kraczkowski & Chernoff 2014:325 [ref. 34840], Page et al. 2023:75 [ref. 40505]). Current status: Valid as Rhinichthys obtusus Agassiz 1854. Leuciscidae: Pogonichthyinae. Distribution: North America: eastern and central U.S.A. Habitat: freshwater.