False Penguin Tetra
False Penguin Tetra (Thayeria boehlkei) is an attractive aquarium fish from Araguaia River, upper Amazon (Peru, Bolivia).
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 Araguaia River, upper Amazon (Peru, Bolivia). 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 | 2.25 inches (5.5 cm) |
| Min. Group Size | 8 minimum — can be mixed with T. obliqua |
| Ideal Temp | 72–82°F (22–28°C) |
| Ideal pH | 6.0–7.5 |
| Ideal GH | 3–15 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 | Araguaia River, upper Amazon (Peru, Bolivia) |
| Notes | More common in the trade than T. obliqua — often just sold as 'Penguin Tetra.' Care identical to obliqua. Same distinctive head-up resting posture and angled tail stripe. |
