tschudii, Orestias Castelnau [F. L.] 1855:51, Pl. 27 (fig. 1) [Animaux nouveaux or rares v. 2; ref. 766] Lake Titicaca. Syntypes: MNHN A-9604 (3). Type catalog: Bertin & Estève 1950:26 [ref. 19576]. •Valid as Orestias tschudii Castelnau 1855 -- (Parenti 1984:191 [ref. 5359], Ortega & Vari 1986:19 [ref. 9708], Lazara 2001:242 [ref. 25711], Costa in Reis et al. 2003:553 [ref. 27061], Lüssen et al. 2004:59 [ref. 29603] as questionably valid, Sarmiento et al. 2014:187 [ref. 35004], Esmaeili et al. 2018:23 [ref. 36738]). Current status: Valid as Orestias tschudii Castelnau 1855. Cyprinodontidae: Orestiinae. Distribution: Lake Titicaca: Bolivia and Peru. Habitat: freshwater.