How Many Pictus Catfish in a 55-Gallon Tank?
In a 55-gallon tank you can comfortably keep about 3–6 Pictus Catfish. As a schooling species, never keep fewer than 3.
Why
Stocking is driven by adult size and waste output, not just fish count. Pictus Catfish reaches about 5" with a heavy bioload, and needs 75–81°F water at pH 6.5–7.5. Always cycle the tank and test water before adding livestock.
| Adult size | 5" |
|---|---|
| Minimum tank | 55 gallons |
| Temperature | 75–81°F |
| pH | 6.5–7.5 |
| Temperament | Semi-aggressive |
| Schooling | Yes — group of 3+ |
| Diet | Carnivore |
| Care level | Moderate |
| Origin | Amazon and Orinoco basins |