Compatibility
Discus × Freshwater Angelfish Compatibility
Compatibility calculated based on predation risk, behaviour profile, and water-parameter overlap.
Discus and Freshwater Angelfish can live together in a well-planted community tank, but territorial behaviour should be monitored and water-parameter overlap should be checked carefully.
TemperatureA
pHC
HardnessB
FlowA
PredationA
BehaviourB
Compatible with cautionB
Envrionmental Factors
Temperature overlap
Discus: 27.0–30.0 °C
Freshwater Angelfish: 24.0–30.0 °C
Shared window: 27.0–30.0°C.
pH overlap
Discus: 6.0–6.5
Freshwater Angelfish: 6.8–7.8
No shared operating range is present between the recorded values.
Hardness overlap
Discus: Very soft → Soft
Freshwater Angelfish: Soft → Medium
Shared hardness bands: 1 (overlap ratio 50%).
Flow match
Discus: Low
Freshwater Angelfish: Medium
Flow preferences do not conflict directly (no low-vs-high clash).
Behavioural Factors
Predation risk (size ratio)
Adult size ratio: 1.42x
Adult size gap is under 2.0x, which is usually a safer ratio.
Behaviour risk
- - Discus: Hierarchical.
- - Freshwater Angelfish: Territorial.
- - Freshwater Angelfish: Predatory.
- - At least one species can be pushy or fin-nippy; monitor closely.
Parameter snapshot
| Parameter | Discus | Freshwater Angelfish |
|---|---|---|
| Adult size | 17.0 cm | 12.0 cm |
| Temperature | 27.0–30.0 °C | 24.0–30.0 °C |
| pH | 6.0–6.5 | 6.8–7.8 |
| Hardness | Very soft → Soft | Soft → Medium |
| Flow | Low | Medium |
| Locations | Rio Negro, Brazil | South America |
Geographic overlap (supporting signal)
No recorded overlap in our dataset.
Best tank mates for Discus
Reference links to curated compatibility pair pages for this species.
Kuhli Loach
Pangio kuhlii