Penguin Tetra (Obliqua)
Penguin Tetra (Obliqua) (Thayeria obliqua) is an attractive aquarium fish from Amazon River basin, Brazil and Peru.
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 Amazon River basin, Brazil and Peru. 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 8. 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 | 2.5 inches (6.5 cm) |
| Min. Group Size | 8 minimum — active schooling looks best in larger groups |
| Ideal Temp | 72–82°F (22–28°C) |
| Ideal pH | 6.0–7.5 |
| Ideal GH | 3–12 dGH |
| Ideal KH | 1–8 dKH |
| Staple Food | Hikari Micro Pellets |
| Treat / Supplement | Hikari Frozen or Freeze-Dried Tubifex Worms, Hikari Frozen or Freeze-Dried Baby Brine Shrimp |
| Origin | Amazon River basin, Brazil and Peru |
| Notes | Holds body at head-up angle when resting — 'penguin' posture. Bold angled black stripe into tail. Active swimmer needing open space. |
