Red rainbowfish vs Glowlight tetra: can they live together?

Verdict: With caution

The Red rainbowfish grows about twice as long as the Glowlight tetra; watch for bullying or predation.
Both are comfortable at 24–25°C (75–77°F).
A pH of 7.0–8.0 suits both.
Minimum tank for the pair: 150 L (40 US gal)

Side by side

	Red rainbowfish	Glowlight tetra
Adult size	12 cm (4.7 in)	5 cm (2 in)
Minimum tank	150 L (40 US gal)	40 L (11 US gal)
Temperature	22–25°C (72–77°F)	24–28°C (75–82°F)
pH	7.0–8.0	6.0–8.0
Hardness	9–19 dGH (161–339 ppm)	5–12 dGH (89–214 ppm)
Temperament	Peaceful	Peaceful
Community tank	Good	Excellent
Care level	Easy	Easy
Diet	Omnivore	Omnivore