How Many Rainbow Cichlid in a 125-Gallon Tank?
In a 125-gallon tank, plan on about 1–2 Rainbow Cichlid, leaving room for tankmates and filtration headroom.
Why
Stocking is driven by adult size and waste output, not just fish count. Rainbow Cichlid reaches about 3" with a moderate bioload, and needs 72–82°F water at pH 7–8. Always cycle the tank and test water before adding livestock.
| Adult size | 3" |
|---|---|
| Minimum tank | 30 gallons |
| Temperature | 72–82°F |
| pH | 7–8 |
| Temperament | Peaceful |
| Schooling | No |
| Diet | Omnivore |
| Care level | Easy |
| Origin | Central America |
More fish for a 125-gallon tank → Rainbow Cichlid tankmates →