Mexican tetra (Astyanax mexicanus)

General data
- Main name: Mexican tetra
- Habitat: Freshwater
- Distribution: Balsas River
Classification
- Genus: Astyanax - Astyanax
- Family: Characidae - Characins
- Order: Characiformes - Characins
- Class: Teleostei - Ray-finned fishes
- Superclass: Osteichthyes - Bony fishes