n = 66
| Scientific Name | Author | Valid Name | Family | English Name |
|---|---|---|---|---|
| Orestias agassii | Valenciennes, 1846 | Orestias agassizii | Cyprinodontidae | |
| Orestias agassii pequeni | Tchernavin, 1944 | Orestias frontosus | Cyprinodontidae | |
| Orestias agassizi crequii | Pellegrin, 1904 | Orestias agassizii | Cyprinodontidae | |
| Orestias agassizi inornata | Pellegrin, 1904 | Orestias agassizii | Cyprinodontidae | |
| Orestias agassizi senechali | Pellegrin, 1904 | Orestias agassizii | Cyprinodontidae | |
| Orestias agassizi typica | Pellegrin, 1904 | Orestias agassizii | Cyprinodontidae | |
| Orestias agassizii | Valenciennes, 1846 | Orestias agassizii | Cyprinodontidae | |
| Orestias agassizii affinis | Garman, 1895 | Orestias agassizii | Cyprinodontidae | |
| Orestias albus | Valenciennes, 1846 | Orestias albus | Cyprinodontidae | |
| Orestias ascotanensis | Parenti, 1984 | Orestias ascotanensis | Cyprinodontidae | |
| Orestias bairdii | Cope, 1876 | Orestias pentlandii | Cyprinodontidae | |
| Orestias chungarensis | Vila & Pinto, 1987 | Orestias chungarensis | Cyprinodontidae | |
| Orestias crawfordi | Tchernavin, 1944 | Orestias crawfordi | Cyprinodontidae | |
| Orestias ctenolepis | Parenti, 1984 | Orestias ctenolepis | Cyprinodontidae | |
| Orestias cuvieri | Valenciennes, 1846 | Orestias cuvieri | Cyprinodontidae | Orestias |
| Orestias cypho | Fowler, 1916 | Orestias luteus | Cyprinodontidae | |
| Orestias elegans | Garman, 1895 | Orestias elegans | Cyprinodontidae | |
| Orestias empyraeus | Allen, 1942 | Orestias empyraeus | Cyprinodontidae | |
| Orestias farfani | Parenti, 1984 | Orestias luteus | Cyprinodontidae | |
| Orestias forgeti | Lauzanne, 1981 | Orestias forgeti | Cyprinodontidae | |
| Orestias frontosus | Cope, 1876 | Orestias frontosus | Cyprinodontidae | |
| Orestias gilsoni | Tchernavin, 1944 | Orestias gilsoni | Cyprinodontidae | |
| Orestias gloriae | Vila, Scott, Mendez, Valenzuela, Iturra & Poulin, 2012 | Orestias gloriae | Cyprinodontidae | |
| Orestias gracilis | Parenti, 1984 | Orestias gracilis | Cyprinodontidae | |
| Orestias gymnotus | Parenti, 1984 | Orestias gymnota | Cyprinodontidae | |
| Orestias hardini | Parenti, 1984 | Orestias hardini | Cyprinodontidae | |
| Orestias humboldti | Valenciennes, 1846 | Orestias cuvieri | Cyprinodontidae | Orestias |
| Orestias imarpe | Parenti, 1984 | Orestias imarpe | Cyprinodontidae | |
| Orestias incae | Garman, 1895 | Orestias incae | Cyprinodontidae | |
| Orestias ispi | Lauzanne, 1981 | Orestias ispi | Cyprinodontidae | |
| Orestias jussiei | Valenciennes, 1846 | Orestias jussiei | Cyprinodontidae | |
| Orestias jussiei puni | Tchernavin, 1944 | Orestias puni | Cyprinodontidae | |
| Orestias langui | Tchernavin, 1944 | Orestias agassizii | Cyprinodontidae | |
| Orestias lastarriae | Philippi, 1876 | Orestias lastarriae | Cyprinodontidae | |
| Orestias laucaensis | Arratia, 1982 | Orestias laucaensis | Cyprinodontidae | |
| Orestias luteus | Valenciennes, 1846 | Orestias luteus | Cyprinodontidae | |
| Orestias minimus | Tchernavin, 1944 | Orestias minimus | Cyprinodontidae | |
| Orestias minutus | Tchernavin, 1944 | Orestias minutus | Cyprinodontidae | |
| Orestias mooni | Tchernavin, 1944 | Orestias mooni | Cyprinodontidae | |
| Orestias mulleri | Valenciennes, 1846 | Orestias mulleri | Cyprinodontidae | |
| Orestias multiporis | Parenti, 1984 | Orestias multiporis | Cyprinodontidae | |
| Orestias mundus | Parenti, 1984 | Orestias mundus | Cyprinodontidae | |
| Orestias neveui | Pellegrin, 1904 | Orestias albus | Cyprinodontidae | |
| Orestias olivaceus | Garman, 1895 | Orestias olivaceus | Cyprinodontidae | |
| Orestias ortonii | Cope, 1876 | Orestias agassizii | Cyprinodontidae | |
| Orestias owenii | Valenciennes, 1846 | Orestias jussiei | Cyprinodontidae | |
| Orestias parinacotensis | Arratia, 1982 | Orestias parinacotensis | Cyprinodontidae | |
| Orestias pentlandii | Valenciennes, 1846 | Orestias pentlandii | Cyprinodontidae | |
| Orestias pentlandii fuscus | Garman, 1895 | Orestias pentlandii | Cyprinodontidae | |
| Orestias piacotensis | Vila, 2006 | Orestias piacotensis | Cyprinodontidae | |
| Orestias polonorum | Tchernavin, 1944 | Orestias polonorum | Cyprinodontidae | |
| Orestias puni | Tchernavin, 1944 | Orestias puni | Cyprinodontidae | |
| Orestias richersoni | Parenti, 1984 | Orestias richersoni | Cyprinodontidae | |
| Orestias robustus | Parenti, 1984 | Orestias robustus | Cyprinodontidae | |
| Orestias rospigliosii | Eigenmann & Allen, 1942 | Orestias agassizii | Cyprinodontidae | |
| Orestias rotundipinnis | Parenti, 1984 | Orestias luteus | Cyprinodontidae | |
| Orestias silustani | Allen, 1942 | Orestias silustani | Cyprinodontidae | |
| Orestias taquiri | Tchernavin, 1944 | Orestias taquiri | Cyprinodontidae | |
| Orestias tchernavini | Lauzanne, 1981 | Orestias tchernavini | Cyprinodontidae | |
| Orestias tirapatae | Boulenger, 1902 | Orestias agassizii | Cyprinodontidae | |
| Orestias tomcooni | Parenti, 1984 | Orestias tomcooni | Cyprinodontidae | |
| Orestias tschudii | Castelnau, 1855 | Orestias tschudii | Cyprinodontidae | |
| Orestias tutini | Tchernavin, 1944 | Orestias tutini | Cyprinodontidae | |
| Orestias uruni | Tchernavin, 1944 | Orestias uruni | Cyprinodontidae | |
| Orestias ututo | Parenti, 1984 | Orestias ututo | Cyprinodontidae | |
| Orestias uyunius | Fowler, 1940 | Orestias agassizii | Cyprinodontidae |