How Many Hillstream Loach in a 125-Gallon Tank?
In a 125-gallon tank you can comfortably keep about 3–83 Hillstream Loach. As a schooling species, never keep fewer than 3.
Why
Stocking is driven by adult size and waste output, not just fish count. Hillstream Loach reaches about 2.5" with a moderate bioload, and needs 68–75°F water at pH 6.5–7.5. Always cycle the tank and test water before adding livestock.
| Adult size | 2.5" |
|---|---|
| Minimum tank | 20 gallons |
| Temperature | 68–75°F |
| pH | 6.5–7.5 |
| Temperament | Peaceful |
| Schooling | Yes — group of 3+ |
| Diet | Herbivore |
| Care level | Moderate |
| Origin | Vietnam (cool, high-flow streams) |
More fish for a 125-gallon tank → Hillstream Loach tankmates →