How Many Angelfish in a 55-Gallon Tank?
In a 55-gallon tank, plan on about 1–2 Angelfish, leaving room for tankmates and filtration headroom.
Why
Stocking is driven by adult size and waste output, not just fish count. Angelfish reaches about 6" with a heavy bioload, and needs 76–84°F water at pH 6–7.5. Always cycle the tank and test water before adding livestock.
| Adult size | 6" |
|---|---|
| Minimum tank | 30 gallons |
| Temperature | 76–84°F |
| pH | 6–7.5 |
| Temperament | Semi-aggressive |
| Schooling | No |
| Diet | Omnivore |
| Care level | Moderate |
| Origin | Amazon basin |