Can Jack Dempsey Live With Lemon Tetra?

Jack Dempsey and Lemon Tetra are NOT compatible tank mates.

Detailed Analysis

Temperature ✓ Compatible

Good temperature overlap at 72–82°F.

pH ✓ Compatible

Good pH overlap at 6.5–7.5.

Size ✗ Not Compatible

Extreme size difference. Jack Dempsey (10") may eat or bully Lemon Tetra (1.5").

Temperament ✗ Not Compatible

Jack Dempsey (aggressive) is not compatible with Lemon 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 Lemon Tetra.

Important Notes

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

Tank Requirements

Minimum tank size for this combination: 63 gallons

ParameterJack DempseyLemon Tetra
Temperature72–86°F72–82°F
pH6.5–7.55.5–7.5
Max Size10"1.5"
TemperamentAggressivePeaceful
Swim LevelMiddleMiddle
Min Tank55 gal15 gal

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