n = 5
| Scientific Name | Author | Valid Name | Family | English Name |
|---|---|---|---|---|
| Girardinichthys ireneae | Radda & Meyer, 2003 | Girardinichthys ireneae | Goodeidae | |
| Girardinichthys limnurgus | Jordan & Evermann, 1927 | Girardinichthys multiradiatus | Goodeidae | Darkedged splitfin |
| Girardinichthys multiradiatus | (Meek, 1904) | Girardinichthys multiradiatus | Goodeidae | Darkedged splitfin |
| Girardinichthys turneri | (de Buen, 1940) | Hubbsina turneri | Goodeidae | Highland splitfin |
| Girardinichthys viviparus | (Bustamante, 1837) | Girardinichthys viviparus | Goodeidae | Chapultepec splitfin |