n = 15
| Scientific Name | Author | Valid Name | Family | English Name |
|---|---|---|---|---|
| Diptychus annandalei | Regan, 1907 | Schizothorax richardsonii | Cyprinidae | Snowtrout |
| Diptychus chungtienensis | Tsao, 1964 | Ptychobarbus chungtienensis | Cyprinidae | Heavy lips fish |
| Diptychus crassilabris | Steindachner, 1897 | Gymnodiptychus pachycheilus | Cyprinidae | |
| Diptychus dipogon | (Regan, 1905) | Ptychobarbus dipogon | Cyprinidae | |
| Diptychus dybowskii | Kessler, 1874 | Gymnodiptychus dybowskii | Cyprinidae | Naked osman |
| Diptychus gezaensis | Huang & Chen, 1986 | Genus Species | New species | |
| Diptychus gymnogaster | Kessler, 1879 | Diptychus maculatus | Cyprinidae | Scaly osman |
| Diptychus kaznakovi | (Nikolskii, 1903) | Ptychobarbus kaznakovi | Cyprinidae | |
| Diptychus kessleri | Russki, 1888 | Gymnodiptychus dybowskii | Cyprinidae | Naked osman |
| Diptychus lansdelli | Günther, 1889 | Gymnodiptychus dybowskii | Cyprinidae | Naked osman |
| Diptychus maculates | Steindachner, 1866 | Diptychus maculatus | Cyprinidae | Scaly osman |
| Diptychus maculatus | Steindachner, 1866 | Diptychus maculatus | Cyprinidae | Scaly osman |
| Diptychus pakistanicus | Mirza & Awan, 1979 | Diptychus maculatus | Cyprinidae | Scaly osman |
| Diptychus przewalskii | Kessler, 1879 | Gymnodiptychus dybowskii | Cyprinidae | Naked osman |
| Diptychus sewerzowi | Kessler, 1872 | Diptychus sewerzowi | Cyprinidae |