Can chili rasboras live with arowanas?

Verdict

No. Chili rasboras and arowanas should not share a tank. An adult silver arowana eats fish that fit in its mouth, and at 0.8 inches chili rasboras do.

Chili rasbora75–82°F · pH 4–7

Silver arowana75–86°F · pH 6–7

What to watch

Deal breakerAn adult silver arowana eats fish that fit in its mouth, and at 0.8 inches chili rasboras do.
Deal breakerArowanas are aggressive and will bully peaceful chili rasboras.
Watch outArowanas grow to 36 inches and need 250 gallons, far more than a tank set up for chili rasboras.

What works

Both are fine at 75–82°F.
pH 6–7 suits both.
They use different parts of the tank: chili rasboras the mid, arowanas the top.

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

	Chili rasbora	Silver arowana
Temperature	75–82 °F	75–86 °F
pH	4–7	6–7
Adult size	0.8 in	36.0 in
Minimum tank	5 gal	250 gal
Temperament	Peaceful	Aggressive
Swims at	Middle	Top
Group	Groups of 8+	One per tank
Diet	Carnivore	Carnivore

Better tank mates for chili rasboras

All chili rasbora tank mates

Questions

Can chili rasboras live with arowanas?

No. Chili rasboras and arowanas should not share a tank. An adult silver arowana eats fish that fit in its mouth, and at 0.8 inches chili rasboras do.

What temperature suits both chili rasboras and arowanas?

75–82 °F. Chili rasboras need 75–82 °F, arowanas need 75–86 °F.

What size tank do chili rasboras and arowanas need together?

At least 250 gal, set by the silver arowana. Add space for each extra fish.