Blind Cave Tetra
Blind Cave Tetra (Astyanax mexicanus) is an attractive aquarium fish from Cave systems of Mexico and southern USA.
Feeding & Care Tip: Hikari Micro Pellets makes an excellent daily staple. Supplement 2–3× per week with Hikari Frozen or Freeze-Dried Bloodworms, Hikari Frozen or Freeze-Dried Tubifex Worms to maintain best condition and color. Feed small amounts 2–3 times daily.
Native to Cave systems of Mexico and southern USA. In the aquarium, a planted setup with the ideal parameters listed below and stable, clean water produces the best coloration and health.
Keep in groups of at least 6. As with most schooling species, larger groups produce more natural behavior and richer color. See Notes for any important care considerations.
A rewarding addition to the planted aquarium, offering attractive coloration and peaceful nature in a well-managed community setup.
Care & Ideal Parameters
| Difficulty | Easy |
| Temperament | Peaceful — Community |
| Typical Adult Size | 3.5 inches (9.0 cm) |
| Min. Group Size | 6 minimum |
| Ideal Temp | 64–77°F (18–25°C) |
| Ideal pH | 6.5–8.0 |
| Ideal GH | 10–30 dGH |
| Ideal KH | 5–15 dKH |
| Staple Food | Hikari Micro Pellets |
| Treat / Supplement | Hikari Frozen or Freeze-Dried Bloodworms, Hikari Frozen or Freeze-Dried Tubifex Worms |
| Origin | Cave systems of Mexico and southern USA |
| Notes | Eyeless cave-adapted fish — fascinating biology. Navigates by lateral line. Hard cooler water preferred. Robust and hardy. Educational conversation piece. |
