Siamese Fighting Fish
Betta splendens- Temperature
- 75–86°F
- pH
- 6–8
- Minimum tank
- 5 US gal
- Temperament
- Aggressive
Siamese Fighting Fish and Oscar compatibility
Likely incompatible
Compare these records as a starting point, then account for the actual tank, group size, individual behavior, hiding space, diet, and current health.
Oscar
Astronotus ocellatus- Temperature
- 74–81°F
- pH
- 6–8
- Minimum tank
- 75 US gal
- Temperament
- Aggressive
- Oscar can eat Siamese Fighting Fish
- Temperament conflict: aggressive + aggressive
- Both species are territorial
Built from immutable TankForge catalog IDs. Source confidence: high / medium. See the catalog methodology before making a stocking decision.