Original description:
- Jordan, David Starr & Barton Warren Evermann. 1898. "The fishes of North and Middle America: A descriptive catalogue of the species of fishes and fish-like vertebrates found in the waters of North America, north of the Isthmus of Panama. Part III". United States National Museum Bulletin. 47:2183-3136 (ffm01817)
Type species: Aztecula mexicana Meek, 1902 (name replacement).
Described species included (5):
valid: 1 synonym: 4- Codoma vittata Girard, 1856 (synonym)
- Ceratichthys sallaei Günther, 1868 (valid)
- Notropis aztecus Woolman, 1894 (synonym)
- Aztecula mexicana Meek, 1902 (synonym)
- Notropis lermae Evermann & Goldsborough, 1902 (synonym)