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| No. | Valid Name | Author | English Name |
| 1. | Dionda argentosa | Girard, 1856 | Manantial roundnose minnow |
| 2. | Dionda diaboli | Hubbs & Brown, 1957 | Devils River minnow |
| 3. | Dionda episcopa | Girard, 1856 | Roundnose minnow |
| 4. | Dionda melanops | Girard, 1856 | Spotted minnow |
| 5. | Dionda nigrotaeniata | (Cope, 1880) | Guadalupe roundnose minnow |
| 6. | Dionda serena | Girard, 1856 | Nueces roundnose minnow |