n = 4
| Scientific Name | Author | Valid Name | Family | English Name |
|---|---|---|---|---|
| Biwia springeri | (Bănărescu & Nalbant, 1973) | Biwia springeri | Gobionidae | |
| Biwia tama | Oshima, 1957 | Biwia tama | Gobionidae | |
| Biwia yodoensis | Kawase & Hosoya, 2010 | Biwia yodoensis | Gobionidae | |
| Biwia zezera | (Ishikawa, 1895) | Biwia zezera | Gobionidae |