n = 11
| Scientific Name | Author | Valid Name | Family | English Name |
|---|---|---|---|---|
| Formosania chenyiyui | (Zheng, 1991) | Formosania chenyiyui | Gastromyzontidae | |
| Formosania davidi | (Sauvage, 1878) | Formosania davidi | Gastromyzontidae | |
| Formosania fascicauda | (Nichols, 1926) | Formosania fascicauda | Gastromyzontidae | |
| Formosania fasciolata | (Wang, Fan & Chen, 2006) | Formosania fasciolata | Gastromyzontidae | |
| Formosania galericula | (Zhang, 2011) | Formosania galericula | Gastromyzontidae | |
| Formosania gilberti | Oshima, 1919 | Formosania lacustris | Gastromyzontidae | |
| Formosania lacustre | (Steindachner, 1908) | Formosania lacustris | Gastromyzontidae | |
| Formosania lacustris | (Steindachner, 1908) | Formosania lacustris | Gastromyzontidae | |
| Formosania paucisquama | (Zheng, 1981) | Formosania paucisquama | Gastromyzontidae | |
| Formosania stigmata | (Nichols, 1926) | Formosania stigmata | Gastromyzontidae | |
| Formosania tinkhami | (Herre, 1934) | Formosania tinkhami | Gastromyzontidae |