Uaru vs Redbreast acara: can they live together?

Verdict: Not recommended

The Redbreast acara is aggressive towards other fish.
The Uaru is aggressive towards other fish.
An adult Uaru is about 4 times the length of a Redbreast acara and may eat it.
Both are comfortable at 26–29°C (79–84°F).
A pH of 6.0–7.0 suits both.

Side by side

	Uaru	Redbreast acara
Adult size	30 cm (12 in)	7.5 cm (3 in)
Minimum tank	285 L (75 US gal)	115 L (30 US gal)
Temperature	26–30°C (79–86°F)	25–29°C (77–84°F)
pH	5.0–7.0	6.0–7.5
Hardness	5–12 dGH (89–214 ppm)	1–20 dGH (18–357 ppm)
Temperament	Aggressive	Aggressive
Care level	Easy	Easy
Diet	Herbivore	Omnivore