ipni, Notropis Álvarez [J.] & Navarro [L.] 1953:5, Fig. 1 [Anales de la Escuela Nacional de Ciencias Biológicas, México v. 7 (nos 1-4); ref. 12635] Barranca de Venados, .5 kilometers below Puente Venado, Río de Metztitlán, state of Hidalgo, Mexico. Holotype: ENCB uncat. Paratypes: (75) ENCB uncat., UMMZ 172496 (6), USNM 163666 (6). Type catalog: Gilbert 1998:96 [ref. 23395]. •Valid as Dionda ipni (Álvarez & Navarro 1953) -- (Espinosa Pérez et al. 1993:13 [ref. 22290], Gilbert 1998:96 [ref. 23395], Nelson et al. 2004:70 [ref. 27807], Scharpf 2005:15 [ref. 28940], Miller 2006:118 [ref. 28615]). •Valid as Tampichthys ipni (Álvarez & Navarro 1953) -- (Schönhuth et al. 2008:745 [ref. 29831], Page et al. 2013:78 [ref. 32708], Page et al. 2023:76 [ref. 40505]). Current status: Valid as Tampichthys ipni (Álvarez & Navarro 1953). Leuciscidae: Pogonichthyinae. Distribution: Southern North America: Atlantic Slope (Mexico). Habitat: freshwater.