Can jack dempseys live with chili rasboras?

Verdict

No. Jack dempseys and chili rasboras should not share a tank. An adult jack dempsey eats fish that fit in its mouth, and at 0.8 inches chili rasboras do.

Jack Dempsey72–86°F · pH 6.5–7.5

Chili rasbora75–82°F · pH 4–7

What to watch

Deal breakerAn adult jack dempsey eats fish that fit in its mouth, and at 0.8 inches chili rasboras do.
Deal breakerJack dempseys are aggressive and will bully peaceful chili rasboras.

What works

Both are fine at 75–82°F.
pH 6.5–7 suits both.

Water side by side

The green band is the temperature range both can live in.

The green band is the pH both tolerate.

Size to scale

Adult length in an aquarium. A fish can swallow anything that fits in its mouth, roughly a third to half its own length for predators.

Care at a glance

	Jack Dempsey	Chili rasbora
Temperature	72–86 °F	75–82 °F
pH	6.5–7.5	4–7
Adult size	10.0 in	0.8 in
Minimum tank	55 gal	5 gal
Temperament	Aggressive	Peaceful
Swims at	Middle	Middle
Group	Alone or in pairs	Groups of 8+
Diet	Carnivore	Carnivore

Better tank mates for jack dempseys

CrayfishYes

All jack dempsey tank mates

Better tank mates for chili rasboras

All chili rasbora tank mates

Questions

Can jack dempseys live with chili rasboras?

No. Jack dempseys and chili rasboras should not share a tank. An adult jack dempsey eats fish that fit in its mouth, and at 0.8 inches chili rasboras do.

What temperature suits both jack dempseys and chili rasboras?

75–82 °F. Jack dempseys need 72–86 °F, chili rasboras need 75–82 °F.

What size tank do jack dempseys and chili rasboras need together?

At least 55 gal, set by the jack dempsey. Add space for each extra fish.