silustani, Orestias Allen [W. R.] in Eigenmann & Allen 1942:366, Pl. 19 (fig. 1) [Fishes of western South America; ref. 1246] Lago Umayo, Peru. Holotype (?): CAS 44205 [ex IU 16097] (5). Paratypes or syntypes: CAS 44206 [ex IU 16097] (17). Perhaps a holotype can be established based on information presented in the original description. •Valid as Orestias silustani Allen 1942 -- (Parenti 1984:181 [ref. 5359], Ortega & Vari 1986:19 [ref. 9708], Lazara 2001:241 [ref. 25711], Costa in Reis et al. 2003:553 [ref. 27061], Esmaeili et al. 2018:22 [ref. 36738]). Current status: Valid as Orestias silustani Allen 1942. Cyprinodontidae: Orestiinae. Distribution: Lake Titicaca basin, Peru. Habitat: freshwater.