Can Jack Dempsey Live With Rummy Nose Tetra?

Jack Dempsey and Rummy Nose Tetra are NOT compatible tank mates.

Detailed Analysis

Temperature ✓ Compatible

Good temperature overlap at 74–82°F.

pH ✓ Compatible

Good pH overlap at 6.5–7.0.

Size ⚠ Use Caution

Significant size difference (10" vs 2"). Jack Dempsey may bully or stress Rummy Nose Tetra.

Temperament ✗ Not Compatible

Jack Dempsey (aggressive) is not compatible with Rummy Nose Tetra (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 Rummy Nose Tetra.

Important Notes

  • Rummy Nose Tetra is a schooling fish and needs at least 6 of its kind.

Tank Requirements

Minimum tank size for this combination: 65 gallons

ParameterJack DempseyRummy Nose Tetra
Temperature72–86°F74–82°F
pH6.5–7.55.5–7
Max Size10"2"
TemperamentAggressivePeaceful
Swim LevelMiddleMiddle
Min Tank55 gal20 gal

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