Red discus vs Ram cichlid: can they live together?

Verdict: With caution

The Red discus grows about twice as long as the Ram cichlid; watch for bullying or predation.
Both are comfortable at 27–30°C (81–86°F).
A pH of 5.0–6.5 suits both.
Minimum tank for the pair: 210 L (55 US gal)

Side by side

	Red discus	Ram cichlid
Adult size	18 cm (7.1 in)	7.5 cm (3 in)
Minimum tank	210 L (55 US gal)	75 L (20 US gal)
Temperature	27–33°C (81–91°F)	27–30°C (81–86°F)
pH	4.2–6.5	5.0–6.5
Hardness	–	5–12 dGH (89–214 ppm)
Temperament	Peaceful	Peaceful
Care level	Moderate	Moderate
Diet	Carnivore	Carnivore