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Freshwater Angelfish and Oscar 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 concerns

Freshwater Angelfish

Pterophyllum scalare

Temperature: 75–82°F
pH: 6–7
Minimum tank: 30 US gal
Temperament: Semi-aggressive
Source confidence: High

Oscar

Astronotus ocellatus

Temperature: 74–81°F
pH: 6–8
Minimum tank: 75 US gal
Temperament: Aggressive
Source confidence: Medium

Compatibility signals

Temperament conflict: Semi-aggressive + Aggressive
Territorial species sharing same swim level

Catalog provenance

Built from immutable TankForge catalog IDs. See the catalog methodology before making a stocking decision.

Catalog methodology

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