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Siamese Fighting Fish and Guppy 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

Siamese Fighting Fish

Betta splendens

Temperature
75–86°F
pH
6–8
Minimum tank
5 US gal
Temperament
Aggressive
Source confidence
High

Guppy

Poecilia reticulata

Temperature
72–82°F
pH
7–8.5
Minimum tank
10 US gal
Temperament
Peaceful
Source confidence
Medium

Compatibility signals

  • Bettas often clash with long-finned or assertive fish like Guppy.

Catalog provenance

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

Catalog methodology

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