How Many Bucktooth Tetra in a 125-Gallon Tank?
In a 125-gallon tank you can comfortably keep about 8–13 Bucktooth Tetra. As a schooling species, never keep fewer than 8.
Why
Stocking is driven by adult size and waste output, not just fish count. Bucktooth Tetra reaches about 6" with a heavy bioload, and needs 73–82°F water at pH 5.5–7.5. Always cycle the tank and test water before adding livestock.
| Adult size | 6" |
|---|---|
| Minimum tank | 55 gallons |
| Temperature | 73–82°F |
| pH | 5.5–7.5 |
| Temperament | Aggressive |
| Schooling | Yes — group of 8+ |
| Diet | Carnivore |
| Care level | Moderate |
| Origin | Amazon basin |
More fish for a 125-gallon tank → Bucktooth Tetra tankmates →