perspicuus, Hyborhynchus Girard [C. F.] 1856:179 [15] [Proceedings of the Academy of Natural Sciences of Philadelphia v. 8; ref. 1810] Arkansas River, near Fort Smith, Arkansas-Oklahoma border, U.S.A. Syntypes: ANSP 5612 [ex USNM 144] (1), MNHN 0000-0348 [ex USNM 144] (1), USNM 144 (orig. 22, now 11, plus pharyngeal arch as #2722). Type catalog: Böhlke 1984:86 [ref. 13621]. On p. 15 of separate. •Synonym of Pimephales vigilax (Baird & Girard 1853) -- (Lee et al. 1980:343 [ref. 22416], Stauffer et al. 1995:157 [ref. 23376], Fuller et al. 1999:136 [ref. 25838]). •Synonym of Pimephales vigilax (Baird & Girard 1853), but a valid subspecies -- (Gilbert 1998:131 [ref. 23395], Scharpf 2005:35 [ref. 28940]). Current status: Synonym of Pimephales vigilax (Baird & Girard 1853). Leuciscidae: Pogonichthyinae. Distribution: Northeastern U.S.A. [subspecies perspicuus]. Habitat: freshwater.