Generally compatible on core signals
No major temperature, pH, size or behavioural conflict is flagged by the planning model.
Practical response: Still observe individual behaviour and verify species-specific care before purchase.
Angelfish
- Adult size
- 15 cm / 5.9 in
- Tank reference
- 150+ L / 39.6+ US gal
- Group
- 1+
- Zone
- mid
- Temperature
- 24–30°C / 75.2–86°F
Discus
- Adult size
- 16 cm / 6.3 in
- Tank reference
- 250+ L / 66+ US gal
- Group
- 5+
- Zone
- mid
- Temperature
- 28–31°C / 82.4–87.8°F
Water parameter overlap
Behavior and space
Tall-bodied cichlids that need vertical room and may prey on very small fish as they mature. Large warm-water cichlids usually kept in groups; stable water and low-stress tankmates are essential.
A compatibility answer should also consider the actual tank dimensions, number of each fish, filtration, planting and other occupants. Two species can be reasonable together in a long, structured aquarium yet become a poor pairing when compressed into a small footprint.
Common questions
Can Angelfish live with Discus?
The StockingLab verdict is good: No major temperature, pH, size or behavioural conflict is flagged by the planning model.
Do their temperatures overlap?
28–30°C / 82.4–86°F shared range.
Should I trust compatibility calculators completely?
No. Individual behavior, sex ratios, breeding condition, aquascape and tank size can change the outcome. Use the result to identify risks, then verify care requirements before purchase.