Red discus vs Green terror: can they live together?

Verdict: Not recommended

The Green terror is aggressive towards other fish.
Their temperature ranges don't overlap.
A pH of 6.5 suits both.

Side by side

	Red discus	Green terror
Adult size	18 cm (7.1 in)	23 cm (9.1 in)
Minimum tank	210 L (55 US gal)	210 L (55 US gal)
Temperature	27–33°C (81–91°F)	20–24°C (68–75°F)
pH	4.2–6.5	6.5–7.5
Hardness	–	4–20 dGH (71–357 ppm)
Temperament	Peaceful	Aggressive
Care level	Moderate	Easy
Diet	Carnivore	Omnivore