Rummynose Tetra
Rummynose Tetra (Petitella bleheri) is an attractive aquarium fish from Rio Negro and Rio Meta, Brazil and Colombia.
Feeding & Care Tip: Hikari Micro Pellets makes an excellent daily staple. Supplement 2–3× per week with Hikari Frozen or Freeze-Dried Tubifex Worms, Hikari Frozen or Freeze-Dried Baby Brine Shrimp to maintain best condition and color. Feed small amounts 2–3 times daily.
Native to Rio Negro and Rio Meta, Brazil and Colombia. 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 10. 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 | Moderate |
| Temperament | Peaceful — Community |
| Typical Adult Size | 2.0 inches (5.0 cm) |
| Min. Group Size | 10 minimum — groups of 20+ produce the famous tight schooling |
| Ideal Temp | 74–81°F (23–27°C) |
| Ideal pH | 6.0–7.0 |
| Ideal GH | 1–8 dGH |
| Ideal KH | 0–4 dKH |
| Staple Food | Hikari Micro Pellets |
| Treat / Supplement | Hikari Frozen or Freeze-Dried Tubifex Worms, Hikari Frozen or Freeze-Dried Baby Brine Shrimp |
| Origin | Rio Negro and Rio Meta, Brazil and Colombia |
| Notes | Red head coloration is a direct water quality indicator — fades when conditions are poor. Famous for extremely tight schooling in large groups. |
