Can Flowerhorn Live With Jack Dempsey?

Flowerhorn and Jack Dempsey CAN coexist, but with some risks. Careful setup and monitoring required.

Detailed Analysis

Temperature ✓ Compatible

Good temperature overlap at 78–86°F.

pH ✓ Compatible

Good pH overlap at 6.5–7.5.

Size ✓ Compatible

Compatible sizes (12" and 10").

Temperament ⚠ Use Caution

Flowerhorn (aggressive) may have issues with Jack Dempsey (aggressive). Monitor closely if attempting.

Swim Level ⚠ Use Caution

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

Tank Requirements

Minimum tank size for this combination: 83 gallons

ParameterFlowerhornJack Dempsey
Temperature78–86°F72–86°F
pH6.5–7.56.5–7.5
Max Size12"10"
TemperamentAggressiveAggressive
Swim LevelMiddleMiddle
Min Tank55 gal55 gal

Check More Combinations

Use our compatibility checker to add more fish and plan your complete tank.