Compatibility directory

Freshwater Angelfish and Siamese Fighting Fish compatibility

Significant concerns

Compare these records as a starting point, then account for the actual tank, group size, individual behavior, hiding space, diet, and current health.

Freshwater Angelfish

Pterophyllum scalare
Temperature
75–82°F
pH
6–7
Minimum tank
30 US gal
Temperament
Semi-Aggressive

Siamese Fighting Fish

Betta splendens
Temperature
75–86°F
pH
6–8
Minimum tank
5 US gal
Temperament
Aggressive
Compatibility signals
  • Temperament conflict: semiaggressive + aggressive
  • Territorial species sharing same swim level
Catalog provenance

Built from immutable TankForge catalog IDs. Source confidence: high / high. See the catalog methodology before making a stocking decision.