Green terror vs Flag acara: can they live together?

Verdict: Not recommended

The Green terror is aggressive towards other fish.
The Green terror grows about twice as long as the Flag acara; watch for bullying or predation.
Both are comfortable at 22–24°C (72–75°F).
A pH of 6.5–7.5 suits both.

Side by side

	Green terror	Flag acara
Adult size	23 cm (9.1 in)	8 cm (3.1 in)
Minimum tank	210 L (55 US gal)	75 L (20 US gal)
Temperature	20–24°C (68–75°F)	22–26°C (72–79°F)
pH	6.5–7.5	5.2–7.5
Hardness	4–20 dGH (71–357 ppm)	5–12 dGH (89–214 ppm)
Temperament	Aggressive	Peaceful
Care level	Easy	Moderate
Diet	Omnivore	Omnivore