Overview
The Penguin Tetra (Thayeria boehlkei) is a beginner freshwater species known for its silver, black stripe coloration. Swims at an angle. Mid.
Origin & Appearance
Origin: Amazon Basin.
Colors: Silver, Black stripe.
Body Shape: Fusiform (torpedo/streamlined). Typical adult dimensions: 6.0 x 1.1 x 1.8.
Sexual Dimorphism: Subtle.
Tank & Water Requirements
| Min Tank Size | 20 gallons |
| Temperature | 72–82°F |
| pH Range | 6–7.5 |
| Water Hardness (GH) | 3-15 |
| Bioload | low |
| Oxygen Demand | low |
| Plant Safe | yes |
| Aquarium Position | Mid |
Behavior & Activity
Distinctive angled swimming at ~45 degrees head-up; mid-water hovering; tail-down posture is characteristic
Speed: 42/100Aggression: 2/10diurnalSchooling (6+)
Breeding
Moderate; egg scatterer
Common Diseases
💊 Ich
Expert Notes
Swims at an angle