Can Jack Dempsey Live With Phoenix Rasbora?

Jack Dempsey and Phoenix Rasbora are NOT compatible tank mates.

Detailed Analysis

Temperature ✓ Compatible

Good temperature overlap at 72–79°F.

pH ⚠ Use Caution

Very narrow pH overlap (6.5–6.5). Hard to maintain precisely.

Size ✗ Not Compatible

Extreme size difference. Jack Dempsey (10") may eat or bully Phoenix Rasbora (0.8").

Temperament ✗ Not Compatible

Jack Dempsey (aggressive) is not compatible with Phoenix Rasbora (peaceful). Aggression or stress is very likely.

Swim Level ⚠ Use Caution

Both fish occupy the middle level and Jack Dempsey is territorial. Provide plenty of space and hiding spots.

Trait Conflict ✗ Not Compatible

Jack Dempsey is a predator and may eat Phoenix Rasbora.

Important Notes

  • Phoenix Rasbora is a schooling fish and needs at least 8 of its kind.

Tank Requirements

Minimum tank size for this combination: 58 gallons

ParameterJack DempseyPhoenix Rasbora
Temperature72–86°F72–79°F
pH6.5–7.54–6.5
Max Size10"0.8"
TemperamentAggressivePeaceful
Swim LevelMiddleMiddle
Min Tank55 gal5 gal

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