Freshwater Angelfish
Pterophyllum scalare
- Temperature
- 75–82°F
- pH
- 6–7
- Minimum tank
- 30 US gal
- Temperament
- Semi-aggressive
- Source confidence
- High
Freshwater Angelfish and Siamese Fighting Fish compatibility
Compare these records as a starting point, then account for the actual tank, group size, individual behavior, hiding space, diet, and current health.
Significant concernsSiamese Fighting Fish
Betta splendens
- Temperature
- 75–86°F
- pH
- 6–8
- Minimum tank
- 5 US gal
- Temperament
- Aggressive
- Source confidence
- High
Compatibility signals
- Temperament conflict: Semi-aggressive + Aggressive
- Bettas often clash with long-finned or assertive fish like Freshwater Angelfish.
- Freshwater Angelfish grows much larger than a betta and can injure, outcompete, or stress it.
Catalog provenance
Built from immutable TankForge catalog IDs. See the catalog methodology before making a stocking decision.